Safe Tuning Guide for Buell`s using ECM Spy
Contents
1. Model ECM Soft Limit 1 Soft Limit 2 Hard Limit EEPROM Default Default EEPROM Default Default EEPROM Default Default Location Value RPM Location Value RPM Location Value RPM XB9 Row 190 Row 190 Row 190 Race Column Column Column ECM CB060 OA 8C 7000 06 8D 7050 00 98 7600 XB9 Row 1D0 Row 1D0 Row 1C0 Race Column Column Column ECM GB231 08 8C 7000 04 8D 7050 OE 98 7600 Row 1D0 Row 1D0 Row 1D0 Column Column Column XB12 IB310 OE 7E 6300 0A 80 6400 04 8C 7000 Page 43 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience XB12 Row 1D0 Row 1D0 Row 1C0 Race Column Column Column ECM GB231 08 7E 6300 04 80 6400 OE 8C 7000 Adding 2 to the value increases the limit by 100RPM Remember they are Hex values so 88 2 8A The actual RPM value is calculated as by converting the Hex value to decimal and multiplying by 50 e g 7E in Hex 126 and 126 50 6300 Page 44 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience To save you having to calculate the values you need here is a relevant table of convers2. 3D Views T C FuelMap Front FuelMap Rear TPS RPM 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000 10 offer no 4 4 COM 1 opened 19 31 40 Com 5 kann nicht geoffnet werden Fehler Invalid port number The Rear Fuel Map on My Micron equipped XB12s The O2 sensor is installed into the rear header to ensure that the hottest cylinder is the one being measured for Air Fuel mixture Whenever tuning the bike unless you have sensors in each header always make identical changes to front and rear cylinders simultaneously Failing to do this could result in the mixture being correct on one cylinder but incorrect on the other Page 19 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Understanding the Other Maps The following Maps should not need adjustment to suit your bike unless you live in a unique environment eg up the mountains In which case you are probably lucky enough to have wonderful roads with Buell written all over them EcmSpy V 1 7 8 File Options Extras Help Ri Vie H A Overview ECM Runtime Diagnostics Functions Fuel Maps IA A CLT Resistor Specs Air Density Correction Volt ac E 0 00 40 0 42 0 0 81 25 1 59 50 4 43 75 4 83 100 4 93 125 Cold Start Enrichment
3. 10 adjacent to another cell with a value of 200 Just take a look at your map for anything which stands out and try to smooth out the values ideally by increasing one value if possible This is important at the end of the process to ensure a smooth power delivery from your Buell If in doubt increase a value in preference to reducing another Remember a rich mixture is much safer than a lean one When modifying the cells make sure you modify a couple of cells either side of the actual one you are interested in just to keep the map smooth as you work Make small changes and test it then try again With intuition you will learn how much to adjust to get it right Unless you are measuring the mixture in both headers accurately always make sure you modify the front and rear maps by similar amounts Standard principles apply when tuning if the engine struggles to rev and sounds like it is working hard it is probably rich and you normally remove fuel If it feels light revs easily but has no power then add fuel If in doubt ride it add fuel try it again if worse then remove fuel The Tuning Zones TPS RPM 0 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000 255 175 Zone 7 Zone 9 125 Maximum Throttle Low Zone 8 Full Power Maximum 100 RPM Full Power Through The Gears Throttle 80 60 50 Zone 4 Zone 5 Zone 6 40 Pulling Away Cruising Midrange Accelerating Into Corners 30 20 Zone 3 15 Zone 1 Zone 2 High Speed Closing
4. 10 Start up and Idle Closed Throttle Overrun Throttle Zone 1 Start up and Idle This Zone is self explanatory if the bike is ticking over happily when warm you probably don t need to adjust this area at all If the bike is struggling on tick over check for air leaks first before adjusting the fuelling Page 29 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience If the bike is trying to stall it s possibly rich and may need to reduce the figures in Zone 1 If it s hunting for more rpm then it may be running slightly lean Let the bike tick over as best it can and check the Fuel Map screen in ECM Spy to see where the ECM is currently working You should see the ECM moving around in a small area of the map as the rpm changes Zone 2 Closed Throttle Overrun The Popping Zone This will be one of the most noticeable areas where you can improve your fuel map Popping is usually caused by either rich mixture or air leaks in the exhaust system First thing is to check for leaks Check where the headers are fitted to the barrels and on any slip joints on your exhaust Normally you can block the tailpipe loosely with a gloved hand and leaks are fairly easy to find OK assuming you have no leaks then you can try adjusting the mixture Zone 2 is on
5. 22 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience The CPS value should be 0 or 5 depending on which cylinder is due to fire next If it is on 0 go to next step if on 5 rotate backwards until the CPS changes to 0 then follow the next step Rotate the rear wheel in a normal forwards direction until the timing mark is just visible on the left side of the timing inspection hole Rotate the wheel very slowly until the CPS value in ECM Spy increases to 5 This is the exact point of firing EcmSpy Y 1 7 8 Seles File Options Extras Help Eunctions Fuel Maps Other Maps EEPROM Diagnostic Functions CPS Signal C Coil Front Coil Rear C Tachometer C Fuel Pump C Injector Front C Injector Rear C Fan Si Disoposis E BUEIB310 12 11 03 12 55 52 COM Tranmission timed out Now check the timing mark inside the inspection hole If it is exactly central all is good if to the left then the timing is advanced if to the right of the hole it is retarded If the timing is not correct follow the instructions in your service manual to correct or get it sorted by a competent Buell mechanic before adjusting your fuel maps Page 23 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could dama
6. Dyno or Wideband controller A Disclaimer This function is intended to program the motorcycle s ECU which is intended for closed course or racing applications only PLEASE DO NOT CHANGE CALIBRATIONS AND OPERATE YOUR MOTORCYCLE ON PUBLIC ROADS This function must be used by trained personal only Improper use of this product could cause damage to the engine and could cause bodily injury NO LIABILITY FOR CONSEQUENTIAL DAMAGES If you modify your ECM you may be legally obliged to notify your insurance company It may also be illegal in some countries to ride on the road with a modified ECM It should also be stated that modifying your ECM will almost certainly void your Manufacturers warranty Is it Safe For the newcomer modifying the factory ECM might sound really daunting but it can be done safely if you follow the guidelines in this document Always backup the ECM the first time you connect to your Buell Save this file and back it up to a safe location CD or another machine This file is essential if anything goes wrong and you need to recover your ECM Never reduce the values in the fuel maps without checking the Air Fuel Mixture accurately To do this you would need to either run the bike on a dyno or use a wideband O2 sensor and data logging equipment Always modify front and rear cylinders together unless you are monitoring the Air Fuel mixture separately in both Front and Rear Cylinders Never change more tha
7. Maps Reset the TPS Disconnect O2 sensor Remove Headlight Fuse Cold Start Enrichment at 100 Engine between 160 180 c at start of tuning After Tuning Reconnect O2 Sensor Check error codes Clear error codes you will have one from the O2 sensor Replace the headlight fuse Check for fuel Ride 2 3 miles in closed loop Check AFV value is between 90 110 Save the EEPROM Data Save the Fuel Maps Page 48 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience
8. Options Com Port Settings y Page 6 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience If ECM Spy cannot find your ECM through the PC Lead and the ignition is turned on etc it may be a problem with your connection If you have a PC that has had everything connected to it via USB it is likely that it will allocate a large number to the COM port you can find this number using the method describe below If you click on the connections button you can select the COM port identified as being allocated to the cable Mine was 21 which ECM Spy would not support so did the following Right click on My Computer Properties Then the Hardware tab Then Device Manager You can also get here with Start Control Panel Printers and Other Hardware System on the left then click on the Hardware tab then Device Manager Then look down the list for Ports COM and LPT Click on the plus if it is not expanded With the cable connected it should say USB Serial Port COMxx If this number xx is not found by ECM Spy make a note of the lowest COM port in use then right click on the virtual cable and click Properties Click on the Port Settings tab then advanced then in the drop down box select the lowest COM port noted to be not in use Windows
9. a location for the missing serial port driver Best is to deinstall the USB driver completely Unplug the cable and replug after a few seconds Then again follow the instructions from FTDI A very basic test could be done using hyper terminal Start gt Run gt hypertrm exe Open a new session using the new virtual com port and important set flow control to none Then shorten the yellow pin 3 and the orange pin 1 wires together using a straightened paper clip or something similar Every keypress in the hyperterm window should be echoed immediately If not check if flow control is disabled and you re using the correct port Bike connector This is a Deutsch connector and very hard to get in ones you have to be in the trade and buy 100 The Deutsch part numbers are Connector DT06 4S C015 Wedge W4S Socket contact 0462 201 16141 Buell part number 72191 94 The pinout is numbers as printed on the back side of the plug 1 orange 2 black 3 yellow 4 n c PC Leads may be available pre made from Sonic on UKBEG see this link for details http www bike pix com forum viewtopic php t 17934 amp postdays 0 amp postorder asc amp start 60 Sonic provides these a near cost as a service to the community so please do not hassle him if he is unable to supply at any time Interface lead set up for PC From the Options Tab select communications and choose the appropriate COM port for your pc lead Interface
10. as the engine is under significant load in this zone Dyno or wideband tuning are essential if modifying this area Page 30 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Zone 7 Maximum Throttle Low RPM Rarely used except on the dyno or when popping the front wheel up from a clutch less wheelie As per the others Rich remove fuel Weak add some Zone 8 Full Power Through The Gears Ok another important area of the map Accelerating hard out of a corner or just going hard up through the gears This is another area where care is important when tuning as the engine is under significant load in this zone Dyno or wideband tuning are essential if reducing any values in this area Zone 9 Full Power Maximum Throttle Full Throttle Maximum RPM enough said This is the most critical part of the map as it is the one when the engine is under the most load being ridden the hardest Get it wrong here and it will be expensive This is another area where care is important when tuning as the engine is under significant load in this zone Dyno or wideband tuning are essential if reducing any values in this area Page 31 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine
11. column will hardly be used on a Buell Front and Rear Maps The Buell and most air cooled in line V Twins runs hotter on the rear cylinder than the front one due to airflow across the fins To compensate for this Buell design the ECM with separate tables for Fuel and ignition on front and rear cylinders The rear cylinder should normally be similar but slightly richer than the front cylinder in any area of the fuel map Page 17 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience EcmSpy Y 1 7 8 File Options Extras Help RFA Fi id Fetch Maps Burn Maps Dyw T FuelMapFront FuelMap Rear TPS RPM 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000 AAE com ey 4 COM 1 opened 19 31 40 Com 5 kann nicht ge ffnet werden Fehler Invalid port number The Front Fuel Map on My Micron equipped XB12s Page 18 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience EcmSpy Y 1 7 8 File Options Extras Help RVs FiO Overview ECM Runtime Diagnostics Functions Fuel Maps Other Maps EEPROM Fetch Maps Bum Maps
12. you are about to do then quit now and forget using ECM Spy yourself Ask a qualified person to do this work for you However this guide may be of help to them Checklist before you start Check the engine oil It may sound obvious but many people take their bikes for tuning on the dyno without first checking the engine oil This is an essential check and must be performed first Is the timing correct Go to diagnostics and check CPS value Should be Is the engine warm above 160 C Don t tune the bike with a cold engine as it will be running the cold start enrichment As it warms up the mixture will adjust so let the bike warm fully before you start Is the engine too hot If the engine is overheating let it cool Never try and tune the engine if it is running above 220 C as it will start to kick in some of it s safety limits You should hear the fan Are there any air leaks on the exhaust Buells are prone to popping on the overrun Particularly the XB12 s However any air leaks on the manifolds will cause popping which cannot be solved by adding fuel to your maps Before you start check for leaks on the exhaust by blocking the tailpipe with a gloved hand and placing a free hand near the joints Check the AFV value make a note of it and then reset it If the AFV is greater than 100 you will need to increase values in the closed loop area when tuning and vice versa Resetting the AFV is essential as it will directl
13. 2 8D 8C 0A OC 82 8C 03 5A 50 4B 5F 69 68 69 AA 64 C8 64 FA 64 00 96 FA FF FF FF 14 OF 28 78 32 00 2C 01 C4 OF 1E FF D2 64 00 02 00 67 01 OA 02 64 40 01 64 88 OC 64 05 FE 00 4A FF 8C 63 2C 14 14 14 1E 2D 3C AF 1D 70 17 AO OF B8 46 03 OA OF 28 32 3C AF 1B 70 17 AO OF 48 FC 04 E8 03 oo oo 00 B4 Modify the value by entering a value into the data entry cell on top right and pressing the button next to it The value in the EEPROM map should update to the value entered Make sure Changes Only is ticked then select Burn EEPROM This should take a couple of seconds and you have now changed your rev limits Page 46 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Appendix 1 Glossary of Terms Abbreviations used in this guide or in discussion relating to tuning electronic fuel injection and ignition systems ACCEL Acceleration used in conjunction with the Accel tables on fuel maps ACK acknowledge character http en wikipedia org wiki Acknowledge_character AFV adaptive fuel value AFR air fuel ratio BAS bank angle sensor CPS camshaft position sensor http en wikipedia org wiki Camshaft CLT coolant sensor more exact engine temperature sensor DECEL De
14. 55 unknenS2 0 Lembda0 O GA Ar Dens corr 107 0 A ESO art 0145 Ga Error 0 G amp A Engine Sotus 192 la status8S6 Ga TPSdot21 uninwm 4 58 uninn22120 uninwn46 3 uninn53 232 uirnwnbt5s unin 8t 255 winwns 115 Gla MPH 2nd Gear 26 254 ETA MPH 3rd Gear 33 885 BAS ADC 248 EGO Vot 0625 Encr D MAT 35 19 31 Vott InFro ur rewnt S119 urkrrwn23 24 urkrrewn4 7 232 urkrrwrb4 3 urnkrrenb2 204 urkrrewn82 255 urdkrrewnSs 1 BAS Volt 1 21 Errort 0 Erogo MAT ADC H8 Time 71222 327 Voit InRr0 unkan 6 55 unkman24 69 unkrwn48 3 unimns5166 unkrenb3 6 unkan 254 unirn 890 AFROMBOZIO 0 veBins 1 255 175 125 100 80 60 Open MSQ veBins1 258 170 170 480 125 100 47 80 A 80 170 VE Analyzer 145 133 129 413 Save MSQ Save MSO As os let 79 72 68 w veBins1 veBins1 Batt Vor 15 0 Error2 0 Errora 0 RPM 3267 TPS ADC 455 Vot FencD unir 7222 uranwn3 24 uninan 9 232 u nwn5 amp 3 ur nwn54 254 uninwr84 50 urkrrwr1 000 CLT 524 Error3 0 Errort0 0 Spark1 14849 TRS 66 78 Von FP 0 unkrrent8 15 unkrrewn37 130 unkirrenS0 3 unkrrenS7 68 unkrewn6s 3 unkan 49 RPMiSec 1040 462 CLT ADC 207 Error4 0 Error11 0 Span 14199 TP deg 26 0 VWE103 6 unn 9114 unkrren440 unre 232 uknwnS8 1 31 uinean 2 0 unin B70 MP7 754 MPH 1st Geor 18 049 CT MPH 4th Gear41123 Ta MPH Sth Gear 48 28 Select the VE Analyzer button and you will reach the follow
15. IAT Resistor Specs E Volt ac 10 0 0 49 22 0 0 86 65 0 1 40 130 0 3 09 180 0 3 94 245 0 4 53 260 0 4 83 BUEIB310 12 11 03 16 39 31 COM Tranmission timed out The CLT and IAT maps are used to convert the voltage from the sensors to the actual measured values Eg 1 40 volts on the IAT is equal to 80 C on the Inlet Air Temperature sensor CLT Resistor Specs Cylinder Temperature calibration map This is used to calculate accurate engine temperatures within the ECM Eg 0 81 Volts 170 Centigrade IAT Resistor Specs Inlet Air Temperature This references the air temperature sensor within the airbox and converts voltage through the sensor to a temperature Page 20 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Offset Maps The Air Density Correction and Cold Start Enrichment maps are used to affect the fuelling based on certain conditions They will increase or reduce the injector pulse width from the standard values in the fuel map based on criteria EG Cold Start Enrichment will provide additional fuel when the engine is cold Air Density Correction This is used to help acclimatise the bike in different atmospheric conditions If you are riding in extreme altitudes you may wish to consider modifying this but generally would
16. Page 1 of 48 tp a E FASES Version LALA BemSpy V 1 7 8 E 05 2007 OR http www ecmspy de EcmSpy The Window To Your Buell s Soul acknowledgement Ok Safe Tuning Guide for Buell s using ECM Spy Tuning Guide v1 4 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Disclaimer 20 3 20 b3s85 E E SE Sodteats load dota ge sd egatana deans audtneds Jusatace sbsbedsdeba EE E 4 SAC ADS a o ld RE EASES 4 ris Callie TANTS PA 5 ECMSp for PC iii dad 5 PC Imelda ate Aa aeaea a 5 Interface lead set up Tor PO n a E 6 An Introduction tO EOM S ELO 8 The Menu A NT 8 Backup the ECM Dita aia 9 A OS 9 To Backup the BRO haan i oat in it a ie Na a allel 9 Fuel Mapa a aces 12 A A ose ey des aca eons a dear ids g tes a oad chan EAE E A ESES 13 SUS CAT o CIN sss eats O Sd 14 Ud Rta gS DS a i ae OR ON tc er canada 15 Understandin o the AY yahoo esas gassed Goad tase deeded shed aa hi Me eaa 15 SO whatis Closed LOOP tdi liinda i 15 Understand the Luc Map io rectora 16 A A NO 17 Front and Rear MAPS csi Ann cine idas 17 Understanding the Other Maps ietin e aoee i e eet etii eaire ei s eS e EE ones Mavendslaaiies a 20 CET RESIStOr S DECS ae i e E E E E E E 20 TAT ARES ISU SPECS aana na a a aah dace dense N R A I N T a a 20 MEE a e o dd 21 Air De
17. Position Sensor values on the left and the RPM across the top Low Throttle low RPM is on the bottom left with full throttle high RPM on top right EcmSpy Y 1 7 8 fey File Options Extras Help R TAI HA Fetch Maps Burn Maps m FuelMap Front FuelMap Rear 10 Alee a 114 COM 1 opened 19 31 40 Com 5 kann nicht ge ffnet werden Fehler Invalid port number Page 16 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Areas of the Fuel Map The Fuel Map can be broken down into different areas which affect different combinations of throttle position and rpm as you are riding The following table is intended to help explain the areas of the fuel map and how they relate to riding the bike on the road It is only an indication but should help you understand how the map works TPS RPM 0 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000 255 175 Zone 7 Zone 9 125 Maximum Throttle Low Zone 8 Full Power Maximum 100 RPM Full Power Through The Gears Throttle 80 60 50 Zone 4 Zone 5 Zone 6 40 Pulling Away Cruising Midrange Accelerating Into Corners 30 20 Zone 3 15 Zone 1 Zone 2 High Speed Closing 10 Startup and Idle Closed Throttle Overrun Throttle Note the XB12 redlines at 6800RPM the XB9 at 7300RPM hence the final
18. ad EEPROM Brute Force Save EEPROM Exit Page 8 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Backup the ECM Data This is the most critical part of the tuning process If you follow this process you will always be able to reset your ECM to the default factory settings Once backed up save the files to the PC copy them to another PC burn a CD with them and make sure you don t lose them If you lose these files you will not be able to reset your ECM to the original settings EEPROM The EEPROM data contains all the read write data within the ECM Saving the EEPROM data will save everything you do not need to save the Fuel Maps separately except for convenience All the Fuel Maps Ignition Maps TPS value AFV value etc are contained somewhere within the EEPROM data All other pages in ECM Spy are simply there to help you find the appropriate part of the EEPROM and understand which values you are modifying Never modify any values directly within the EEPROM pages unless you really know what you are doing To Backup the EEPROM Connect to the ECM Select the EEPROM tab on the menu Select Fetch EEPROM Page 9 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine a
19. and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Seat of the Pants Possibly the most common method of tuning definitely was the way 20 years ago Some people have The Knack others definitely don t We do not recommend this method as it is possible to make the bike feel good but to have dangerous weak spots you have missed You need to understand your bike and know how it is responding making mental notes as you ride and writing them down at the side of the road You will need to ride through all the normal conditions you ride in noting how the bike responds on different throttle positions If you are going to do this properly you need to mark the throttle at different positions you can equate back to the ECM maps Hold the throttle at specific positions and note the performance as the RPM increase Pull over note the responses then try again at the next throttle position Repeat until finished As a guide if the bike is slow to rev but sounds like it is struggling then it is rich If it is light and revs freely in lower gears but has no power in the higher gears then maybe weak If you are not sure make a note of the current settings then add fuel If it is better great if worse then go back to the old setting and reduce it only a small amount Always take care if reducing any settings below the original values You will need to keep repeating this p
20. but then to go off when used for a few hours This is almost always because the O2 sensor was left connected the bike goes through closed loop riding and adjusts the AFV Page 33 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Datalogging Datalogging is the most accurate way to tune your bike and get it absolutely spot on It is the only way to know what your bike is really doing in the real world would always recommend setting up your bike by datalogging then got to a dyno with air fuel analysis afterwards to get it checked This approach should save you a lot of money on dyno time but have the safety factor of having had the setup checked by a professional The idea is that you connect up your logging equipment Laptop palm or hardware then go and ride the bike Try to go through all the normal riding conditions a few times and get as much data as you can Standard Narrowband O2 Sensor The standard Buell O2 sensor is ok for steady closed loop riding and can be used to setup the bike for normal use but is unlikely to give the best possible results at higher rom conditions Using a Wideband O2 Sensor Wideband sensors react much faster and provide more accurate measurements than Narrowband hence are recommended for the most accurate tuning on
21. cantly enhance your Buell Experience Advanced Functions This guide is intended as a safe tuning guide so first the disclaimer again CHANGING ADVANCED FEATURES SUCH AS YOUR REV LIMITS WILL DEFINITELY INVALIDATE YOUR WARRANTY AND MAY RESULT IN A SERIOUSLY DAMAGED ENGINE Following this section is totally at your discretion and in no way recommended This has only been added to the guide due to popular requests for assistance Rev Limits Are you really sure The Rev limits are believed to be enforced at three levels Soft Limit 1 Skip spark mode is enforced with every fourth spark being dropped Eg fire fire fire miss Soft Limit 2 Skip spark mode with alternate sparks being dropped eg fire miss fire miss Hard Limit When the hard limit is exceeded the spark is cut completely Skip Spark mode is effectively cutting sparks on each cylinder hence allowing the engine to run but significantly reducing power This should be the rev limit we normally hit and you should not be able to reach the hard limit CAUTION FURTHER RESEARCH IS BEING COMPLETED REGARDING REV LIMITS DO NOT USE THIS DATA YET UPDATES WILL BE RELEASED SOON As the Rev limits have serious implications on reliability they are not available in the normal interface of ECM Spy however if you know the EEPROM location you can modify the values directly The following locations identify the soft and hard limits in some EEPROMS
22. celeration used in conjunction with the Decel tables on fuel maps DTC diagnostic trouble code DYNO Dynamometer or rolling road EGO exhaust gas oxygen sensor http en wikipedia org wiki Exhaust_gas_oxygen ECM electronic control module ETS engine temperature sensor http en wikipedia org wiki Resistance_ Thermometer IAT intake air temperature sensor http en wikipedia org wiki Resistance_Thermometer NAK negative acknowledge character http en wikipedia org wiki NAK O2 oxygen sensor RPM revs per minute TPS throttle position sensor http en wikipedia org wiki Throttle_position_sensor VE volumetric efficiency http en wikipedia org wiki Volumetric_efficiency Page 47 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Appendix 2 Tuning Checklists So you ve read the manual ingested everything but just want to get on with the tuning Check this list before you start and after Before Tuning Check engine oil level Check tyre pressures Check static timing Run diagnostics Check error codes No air leaks from exhaust Check the AFV Between 90 110 otherwise reset AFV to 100 ride in closed loop for 2 3 miles and check it again then refer to tuning guide Save the EEPROM Data Save the Fuel
23. e ECM monitors the O2 sensor and learns the appropriate AFV value to apply to the fuel maps This AFV value is applied across the entire fuel map range hence it is critical that this is accurate AFV values can vary from 80 to 160 but should be kept between 90 and 110 whenever possible The AFV can be your friend fine tuning the bike to suit your location or it can be your worst enemy If you setup the bike on the dyno for maximum power across the range you will probably aim for 13 1 13 5 1 Air Fuel ratio If you then go for a ride and enter closed loop mode the ECM will reset the AFV to maybe 80 to reduce fuel and try to get the default 14 7 AFR When you next accelerate hard at full throttle your perfect map as setup on the dyno will now be running at 80 of your values hence weak To compensate for this it is recommended when on the dyno to disconnect the O2 sensor reset the AFV to 100 then tune the bike for an Air Fuel Ratio of 14 7 within the closed loop area This will then allow you to set the Air Fuel Ratio for optimum power in the high rpm throttle areas Always reconnect the O2 sensor after tuning and check the AFV periodically So what is Closed Loop The Closed Loop area is found when riding in low throttle positions at low rpm but not under stress believe this is approximately 1500 4000rpm and 10 30 throttle Riding in Closed Loop allows the ECM to reset the AFV and compensate for the environment It is
24. e Fuel Maps tab on the menu Select Fetch Maps EcmSpy Y 1 7 8 File Options Extras Help AOL _FetchMaps Bamaos 3D View I FuelMap Front FuelMap Rear 10 effes er 44 COM 1 opened 19 31 40 Com 5 kann nicht geof net werden Fehler Invalid port number Page 12 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Now select Save Map from the File Menu EcmSpy V 1 7 8 Options Extras Help Ie F kH Load EEPROM Save EEPROM me Diagnostics Functions Fuel Maps Other Maps EEPROM DVi Exit Burn Maps 3D Views M FuelMap Front Fuel Map Rear TPS RPM 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000 10 enero pene COM 1 opened 19 31 40 Com 5 kann nicht ge ffnet werden Fehler Invalid port number As before now copy it back it up and save it somewhere safe Other Maps No option at the moment to save these so just hit Alt Print Screen Paste into another application and save the file This will give you a reference to get back to if needed Page 13 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting i
25. e Molt 231 0 77 m Status s11 512 513 14515 s16 s17 s18 ell e12 e13 e14 e15 e16 el e18 e31 032 e33 e34 e35 e36 e37 e38 Engine SS MS A oe rE aw an a ae D 1 D 221 e22 e23 e24 e25 e26 e27 228 ed e42 ed3 edd e45 e46 ed edo Firmware Version BUEIB310 12 11 03 EWS wee Oe ee Ih BUEIB31012 11 03 16 11 26 Receive Error got NAK Check the TPS value make a note of it then wind out the idle adjust Near the left air scoop the value should decrease until exactly 0 when idle is wound fully out If not reset it The TPS should be on approximately 5 for tick over Engine Temp between 160 C and 180 C when you start tuning keep an eye on this if tuning on the dyno Stop tuning if the engine temp reaches 2200 C let the engine cool and try again later Cold Start Enrichment should be on 100 any higher values and the bike is effectively running on choke Page 28 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Tuning OK you ve seen this before but time for some more explanations This really is the key to finding the areas of the fuel map where the bike needs tweaking to solve a problem Under normal circumstances the values in cells should be comparable to adjacent cells You should not have one cell with a value of
26. g By default your logfiles will be in the C Program Files EcmSpy megalog directory How to Ride when Datalogging My recommendations for riding the bike when datalogging are Ride in closed loop first for a few miles so you get a stable AFV value Next ride a few miles as you normally would as this is what you are trying to set the bike up for Now try to cover as many fuel map cells as possible put the bike into 3 or 4 at low rom about 2k rpm and hold the throttle at half way until the revs stop increasing Now just shut the throttle quickly and let the bike slow to 2k rom again Repeat for Y throttle and again for full throttle Continue riding in your normal style or slightly more aggressively until you have been out for about 15 mins This should give you enough log data for analysis Ride the bike home in normal riding style trying to stay within closed loop area again so you reach the garage with a stable AFV Page 35 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Following the above process should get you to cover most of the cells in the fuel map at least once with the most commonly used cells for your riding style being covered many times A good datalogging run will cover 10 15 miles so it is worth filling up with fuel before star
27. ge your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Checking the Trouble Codes Time to check all error codes make sure there are no real issues then clear them If anything is wrong when tuning you should be able to check the error codes and make sure they are clear EcmSpy V 1 7 8 TER File Options Extras aU Ne e el o Fuel al Other Maps EEPROM ash Ary po Trouble Codes Current No trouble codes present Historic No trouble codes present BUEIB310 12 1 1 03 1 6 48 46 COM T ranmission timed out Page 24 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Resetting the Throttle Position Sensor The TPS is an electronic sensor which can require resetting periodically Before tuning your Buell it is important to reset the TPS to ensure accurate results First select the Gauges screen and connect to the ECM On the front left of the engine between the airscoop and the engine is the Idle adjust screw which simply adjusts the butterfly in the injector to allow air through for tickover Adjust this screw until the throttle drops to 0 Keep winding the screw out a bit further and hold the throttle closed with light clockwise p
28. gine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Using a Wideband E Meee 34 Setting Up for Datalo na dio 34 How to Ride when Datalog eine crios cicic ici sidad darian isdn sdaagoadea caida dida unica 35 Using MegaLogViewer to optimize your fuel maps oococnnncccnnncccnnncccnnncncnnnnnonnncnononanonnncnnnonnnnnnnnnnnnnannanncnnns 36 O A 41 Checking AFV Valle A ia 41 Check fof Error c deS ot toos 41 Back p A O 41 A TA 41 Che eckme AFV A rt ii IA Ao pain 42 Eo ui A A A Aa 42 PUY ANCE Ch PUC A hg as il i tl Le a 43 RevTamitS Are you really Sure 9 esi ses sl saa is a 43 Modifying the Rev Limits in ECMS py cusco iii paisa lia atenusanasananean 45 Appendix l Glossary of Terms A cd 47 Appendix 2 TUNING HECK A O 48 BA MU SE sa aa EEEE E EEE ced cian E EE E ga seins E d ba ct ccd nate techs Baoaec emacs 48 After TUI iaa 48 Page 3 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Disclaimer This guide is intended to assist in the tuning of your Buell ECM whilst providing advice on how to avoid engine damage To tune your engine safely our strongest recommendation is to print off your default configuration then only ever add fuel to the standard map unless you have access to a
29. good practice to do this periodically Normal riding conditions will normally include Closed Loop riding for long enough To ensure the AFV is about right for your setup try and do a few miles on flat roads between 40 70mph and low throttle openings with a steady throttle This should set the AFV If you have the time you could try riding at 2000rpm for a couple of miles and check the AFV Next try 2500rpm and check then 3000 and 3500 This would validate your map in this region of Throttle RPM combination but is a lot of effort Remember with a narrowband O2 sensor standard one the readings are very slow to respond hence the steady riding required to adjust the AFV Page 15 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Understanding the Fuel Map The Fuel Maps control how much fuel the injectors will flow for any given RPM and Throttle Position combination The values in the table relate to the length of time the injector is open pulse width and flowing fuel It is assumed that you are not modifying the injectors or the fuel pressure hence the only variable is the pulse width of the injector For the technically minded each value in the table equates to 58 Microseconds of injector pulse width duration The fuel map shows the Throttle
30. ing screen Page 37 of 48 BuellTuningGuideV1 6 doc CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience gt PAU gt 12 03 2008 Generate VE Table Ve veBins1 AFR Default Narrowband S al wl x 255_ Wide band delay 0 1 Min RPM 500 Min MAP 0 Wideband AFR Hide Advanced Settings Default Narrowband Min CLT 160 The default table is planned to give 14 7 across most of the fuel maps with 12 5 at full throttle This should be good for a Buell but with dyno testing we may be able to establish a better table for this in future Select Run Analysis If you have changed the file correctly the program will analyze the data and give you the following screen k Message VE Analysis Summary Total log records 10018 Filtered log records 1949 Log records used 8069 Total table cells 156 Cells Analyzed 117 75 Average cell weight 68 9 Cell values altered 103 66 Max Cell Change 55 The Fuel map will have been updated and you can see the changes highlighted in red Hover over a cell to see what it was previously Page 38 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk Howeve
31. ions Value RPM 7E 6300 80 6400 82 6500 84 6600 86 6700 88 6800 8A 6900 8C 7000 8E 7100 90 7200 92 7300 94 7400 96 7500 98 7600 9A 7700 9C 7800 Modifying the Rev Limits in ECMSpy Connect ECMSpy to your bike and select the EEPROM tab then Fetch EEPROM Once the EEPROM has completed loading find the relevant location as per the table above The following image shows a Buell CB060 with Row 190 Column OA highlighted Page 45 of 48 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience BuellTuningGuideV1 6 doc 12 03 2008 EcmSpy 1 7 8 File Options Extras Help A O47 iO Overview ECM Runtime Diagnostics Functions Fuel Maps Other Maps EEPROM Fetch EEPROM Bum EEPROM Changes Onl BUECBO60 05 22 02 oo ot o2 o3 o4 o5 o6 o7 08 09 08 o oc 0D oE 3C 28 50 32 64 32 41 OA 50 05 5F 00 41 OA 50 5F 00 28 1E OA 03 OA 03 0A 05 64 D7 91 D7 FF OF D7 1B D7 2D D7 F4 01 28 78 3E 54 64 1C B4 64 00 B4 04 D7 08 FA 14 58 02 3C 28 DC 05 40 8C OA FO OA 00 OF OF 00 00 3C 3C 00 00 00 00 00 1A 2A 00 00 OD 15 00 EE BB 55 AA 93 96 6E 8C 8
32. l Map Rear 20 37 28 COM 4 Unable to open Port Eroe Invalid port number 20 37 28 COM 4 Unable to open Port Eroe Invalid port number Page 39 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience After 2 runs and VE Analysis EcmSpy Y 1 7 8 Ele Options Extras Help ANIMADO Overview ECM Runtime Diagnostics Functions Fuel Maps Other Maps EEPROM Fetch Maps Burn Maps Fuel Map Front C Fuel Map Rear After 3 runs and VE Analysis EcmSpy V 1 7 8 Efe Options Extras Help ARAI h Overview ECM Runtime Diagnostics Functions FuelMaps Other Maps EEPROM Eetch Maps Bum Maps G Fuel Map Front C Fuel Map Rear 20 37 28 COM 4 Unable to open Port Error Invabd port number 20 37 28 COM 4 Unable to open Port Error Invabd port rmber As you can see from the above started with a smooth map but the analysis has created twin peaks in the maps This is normal and appears to be correct due to the way the logic is written in the ECM software After you complete all this check the AFV value after a smooth ride in closed loop area You should be close to 100 and stable For safety purposes would recommend getting the bike checked on a dyno now but you should find a good result with n
33. leave it alone Cold Start Enrichment This is more normally referred to on older vehicles as the choke Uses the Cylinder Temperature to provide additional fuel to a cold engine automatically returning to the fuel map as the engine warms If your bike is running rich when cold reducing these could help Page 21 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Running Diagnostics Before modifying your ECM strongly recommend running all diagnostics and checking that everything is working correctly EcmSpy V 1 7 8 File Options Extras Help R V Uo Overview ECM Runtime Diagnostics Eunctions Fuel Maps Other Maps EEPROM Diagnostic Functions CPS Signal C Coil Front C Coil Rear Tachometer C Fuel Pump e Injector Front Injector Rear Fan BUEIB310 12 11 03 12 14 51 Fuel Pump Active Checking the Static Timing Before spending time on your fuel map it is wise to check the static timing on the engine This is done by slowly rotating the engine whilst watching the Cam Position Sensor on the Diagnostics page Raise the back wheel off the floor Remove Timing inspection plug Put bike into 5 gear to ease fine turning of the engine Raise side stand Select Diagnostics page in ECM Spy and connect to the ECM Page
34. ly ever going to be used when you are slowing down under engine braking with a closed throttle This is probably the safest area on the fuel map to actually remove fuel Never remove all fuel in this area as you need some to lubricate the engine but try reducing it in small amounts to see if you can improve the popping It is likely that you will not remove the popping completely Zone 3 High Speed Closing Throttle This is effectively the same as Zone 2 but more critical that you keep some fuel in there as the engine is likely to be hot when you are in this zone Alternatives to adjusting fuel in Zones 2 and 3 could be to reduce the values in the Decel table Zone 4 Pulling Away OK so this is the mid throttle low rom area most often used when pulling away or gently accelerating through the gears Zone 5 Cruising Midrange Mid throttle Mid RPM probably the most commonly used zone on your ECM during normal riding If you have modified your bike in any way from standard then hopefully you ve increased the air flowing through the engine As a result you should really only be adding fuel in this area Only remove fuel here if you are really sure Zone 6 Accelerating into corners Not technically accelerating but attacking the corner by letting the engine braking keep the rpm high then holding the throttle in mid range ready to go full throttle as you exit This is another area where care is important when tuning
35. n one thing or one area at a time Always know what you have done Do not adjust areas of the ECM if you do not know what they do This tool is powerful and can modify whatever you ask it to If you are unhappy with what you have read so far or you are not 100 sure of what you are about to do then quit now and forget using ECM Spy yourself Ask a qualified person to do this work for you However this guide may be of help to them Page 4 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Installing ECM Spy You will need e PC Interface lead e ECM Spy Software e A Windows PC in your garage or ability to get your Buell into the house and to the room where your computer is Upstairs spare bedroom Alternatively a laptop may be easier e A Buell with Fuel Injection eg X1 or XB series ECMSpy for PC This is the PC version of the program it runs on Windows 2000 and XP and in administrator mode on Vista http www ecmspy de download EcmSpySetup exe Below is the latest model file usually included in the above but updated between releases of ECMSpy Put it in the ecmspy program folder usually c program files ecmspy http www ecmspy de download ecmspymod ini you will have to right click and save the link as it will be displayed in the browser o
36. nd is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience EcmSpy Y 1 7 8 Sees File Options Extras Help Ve FJ a O Fetch EEPROM Burn EEPROM Changes Only 0 o2 03 04 05 06 oz os og oa o oc 00 0 00 00 00 32 4B A 03 7B 04 18 01 94 OO F4 01i 55 00 6B 01 52 03 05 64 73 55 OC OO 14 50 FO 96 FF 00 96 96 14 64 32 64 64 64 OA 01 18 50 28 55 00 D4 16 AF 50 64 DC 14 10 64 32 28 64 OF 1B 00 1C OF 3B 14 3C 17 60 3C 2C 3C GE 3C 2D 03 18 32 32 AS 4C 04 28 68 C8 64 FF 64 46 05 1B 03 1E 3E 64 C8 87 78 14 OF 14 05 14 04 16 62 82 63 AA 66 FO 01 40 06 6C 02 BO 04 14 04 2E A4 06 FC 08 E8 03 22 OB CA 03 B8 OB 4C 52 03 00 0D 24 00 C4 09 51 00 34 08 SF A4 06 BB 03 E3 01 F4 01 ED 01 2C M 00 28 6E 41 73 52 8C 44 AS 44 31 OO 72 56 00 78 BO 04 35 01 20 03 BA 01 58 c5 0 90 c8 00 00 AO 3C 7D 64 SA 78 8C 19 AO 06 3C 78 00 7D 64 7F 3C AA D5 64 FA 50 G7 64 72 GE 7D 78 4F 50 46 55 64 64 64 69 69 6E 6E OC 18 33 3C 15 18 TS 1B 15 22 15 28 32 18 3C COM 1 opened i 19 31 40 Com 5 kann nicht ge ffnet werden Fehler Invalid port number Now select Save EEPROM from the File Menu Page 10 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significan
37. nsity Correction rin indian 21 Cold Start EXA CAT A A id 21 R nno Dg nOSsulS m a cise hie edocs dd AS 22 Checking the Static TIMIS ssori i a E yoaeed andes daaed sunedesauedoaatanuecaesuduadedeasacedatoansedars 22 Checking the Trouble Codir a e da a ad 24 Resetting the Throttle Position Sensor isoine A eee 25 Resetting the Adaptive Fuel WV ale asi ee ass couse a vendesh med ant sa ecu RE E ecaeeed e E ate eta 26 Ready to Mame the bit aii 27 Checklist before you abria dida dia een 27 ARET tices be A E FL E AE E E A A A ETA T 29 Fhe Tunns Zones re en a cri aE 29 Zone 1 Startup and Idle eiai nn EREKE E a aS 29 Zone 2 Closed Throttle Overrun The Popping Zone ssssssssssesssssessseessresseesseresseessseessresseesseresseesssees 30 Zone gt Hich Sp e d Cl sine Throttle innii e A sa le cen 30 LOSA PMB NS A E A O a 30 Zones Crising Midrange A A a awh E EEE a e mea ARAS 30 Zone 6 Accelerating Into Corners desviada cda 30 Zone MATI TELA RPM ne 31 Zone 8 En PO Wer Thro gh The Getsin A A A A ay E A 31 Zone 9 Full Power Maximum Throttles 22 0 jeasdennd ener eel eden nd Hee 31 Seatof A A Me Aa E E EE a Soe Ae gate 32 Checking the MIXTE naei ar AA a a 32 O BAYA a 1a Ss Shae AAE EET EE ES EE A S E TEE E E E Baa neee maaaes 33 Datalogic io 34 Standard Narrowband O2 Sensor versus adan dio daa 34 Page 2 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your en
38. o changes required Page 40 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Road Testing So you ve finished tuning the bike and the dyno figures or data logs look as good as you can get time to go for a ride Before you do a few checks Is the O2 sensor connected Are there any unexplained error codes If you mapped the bike on a dyno there could be one for the O2 sensor at least Clear them Did you take out the headlight fuse If so stick it back in And lastly how s the fuel It s easy to burn a lot of it on the dyno or when testing Gloves Crash Helmet leathers reflective jacket Well this is meant to be a safe tuning guide Now ride it Test everything listen for popping on the overrun feel the throttle and remember anywhere it feels wrong Is it rich or weak anywhere Hopefully not Make sure you ride it in closed loop for a while 2 3 miles minimum then go through all throttle RPM combinations Back to the garage riding the last mile in closed loop if possible Do not leave the bike ticking over when you arrive just switch it straight off Checking AFV Value Plug in the laptop again and check the AFV You want a figure between 90 and 110 ideally as close to 100 as possible If you have a low AFV value you are t
39. oo rich on your map within the closed loop area This is dangerous as it can cause lean fuel in open loop If you have a high AFV you will be too weak in closed loop and the ECM is compensating but could leave you rich in open loop Check for Error codes Time to check for error codes again there should be none this time If there are deal with them Backup Config again OK time to do a full backup of the ECM the EEPROM and also the fuel maps This is your bike running at its best save that data somewhere safe Riding Normally Use the bike now and enjoy it Make notes if anything feels or sounds wrong otherwise just have fun It should be crisp across the range and running well Page 41 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Burn at least a tank of fuel in normal riding conditions If anything is wrong just perform minor tweaks in those areas Checking AFV again Check check and check the AFV again If it s out by more than 10 then you need to adjust your map Enjoy Well that is why you re doing all this isn t it Page 42 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can signifi
40. r getting it right can significantly enhance your Buell Experience As long as the map looks sensible no extreme values Accept New Table and then Save MSQ As with a new name so you can track the changes Now open the file up in Notepad and copy the first fuel map and paste it over the second one This will give you equal maps font to rear which is important as you are only analyzing the fuel from the rear cylinder You will now have equal maps but the front cylinder will automatically get more fuel Load the new fuel map into ECM Spy and select the 3D View Swap between front and rear cylinders to make sure they look the same This can be shown from the datalogs by comparing Pulsewidth 1 and Pulsewidth2 Burn this new map into the bike and you are now ready to go for another test ride Repeat the steps above for datalogging using as much as possible of the fuel map then bring the bike back in and analyse the data again have found that repeating the process 3 4 times seems to give a pretty good map Starting Map After 1 run and VE Analysis EcmSpy Y 1 7 8 EcmSpy V 1 7 8 Elle Options Extras Help Efe Options Extras Help A QAI h A VLS Wo Overview ECM Runtime Diagnostics Functions FuelMaps Other Maps EEPROM Overview ECM Runtime Disgnostics Functions Fuel Maps Other Maps EEPROM Fetch Maps Bum Maps hows Fetch Maps Bum Maps Fuel Map Front C Fuel Map Bear G FuelMapFront Fue
41. ressure on the throttle grip EcmSpy V 1 7 8 DER Fie Options Extras Help RVA h A Air Density Correction Throttle TPS EGO Voltage Molts 10 Ce 000 Cold Start Enrichment Degrees 2 Wolts Ontime seconds BUEIB310 12 11 03 16 14 11 COM Tranmission timed out Select the Functions tab on ECM Spy and select TPS Reset Wind in the idle adjust screw until the TPS is set to approx 4 6 degrees or 5 1 This should be approximately correct for tick over That s all there is to resetting the TPS Start the bike and check tick over is ok adjust the idle adjust to get a steady tick over Page 25 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Resetting the Adaptive Fuel Value Before you reset the AFV make a note of the current value then select the Functions tab in ECM Spy enter 100 in the AFV box and select Set AFV Job Done Page 26 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Ready to Tune the bike Are you sure Are you really sure If you are unhappy with what you have read so far or you are not 100 sure of what
42. rocess for all parts of the throttle RPM combinations to try and find any areas where it is not performing properly Checking the Mixture Checking the fuel when tuning by seat of the pants is usually done by checking the plug colour You really don t want to be doing this on your XB Ride on a steady throttle holding a specific RPM ride like this for a mile or so then clutch in and kill the ignition immediately Coast to a stop then pull out the plug and check the colour White plug Lean mixture add fuel to or risk damage to your bike Black oily plug Rich mixture Light brown plug All is well the mixture is good At this TPS RPM combination only Repeat for all throttle positions in particular Zones 5 6 8 and 9 and when all zones are between tan and chocolate brown you are finished There is no guarantee that your mixture is totally correct even with tan coloured plugs from this but the bike should be ok to ride Page 32 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience On a Dyno Probably the best way to get the fuel maps right as long as the dyno operator is good and knows a few basic facts about the Buell ECM Always check or reset the TPS before setting up the Buell on a dyno If this is not done and the TPS is out
43. t right can significantly enhance your Buell Experience Understanding your ECM The ECM is the brains of your Buell so using ECM Spy is almost brain surgery The ECM controls all your bikes intelligence Fuel Maps Ignition Maps Error codes and much much more Key items you need to understand to help tune your Buell are listed below Page 14 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Understanding the TPS The TPS is the Throttle Position Sensor The ECM needs to know how open the throttle is and in conjunction with the RPM and atmospheric conditions it knows how much air is flowing and hence how much fuel to inject That is the essence of this tuning If the TPS value is incorrect the ECM will provide the amount of fuel required for the wrong throttle setting and hence poor running will occur A worse scenario is if you tune the bike with an incorrect TPS value then any future correction to TPS will result in incorrect fuel maps Understanding the AFV The Adaptive Fuel Value is how the Buell automatically compensates for changes to the environment eg riding up mountains or swapping the exhaust silencer It is not perfect but does a good job to compensate for minor changes When the bike is ridden in Closed Loop mode explained next th
44. the road and definitely for modified engines Setting up for Datalogging use the Windows version as don t own a palm This means fitting the tankbag and plugging the lead into the diagnostic plug and feeding it out under the seat setup my laptop which will be fully charged so that it will not shut down when not being used This allows me to ride for half an hour then pull out the laptop and it will still be logging In ECM Spy Select Options Program and make sure you are using Megalog format and Always start with a new log file Page 34 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Program Options General Always start with empty logfile V Use Megalog format des V EEPROM fetch next page after NAK English x Language Graphics Antialising Y Transparency Y Show Drag Indicator for 5 Sec Instrument Lag C Smooth Direct Slow Online Mode Lag C Fast Medium C Slow Connect to the bike and Press the Keys to connect to the ECM check on the ECM Runtime page to make sure am seeing data Then click on the floppy disk icon to start logging You are now ready to start the bike and put the laptop safely in the tankbag When you finish the ride just press the floppy disk icon again to stop loggin
45. then all maps setup on the dyno will be out by the same amount when the TPS is next reset This can easily be done by the owner before going to the dyno shop Don t waste your money asking the dyno operator to do this Reset the AFV to 100 This is also essential and should be done immediately on arrival at the dyno shop If the AFV is above 100 when you start tuning it will be adding fuel above the closed loop area Disconnect the O2 sensor That s right disconnect it before tuning on the dyno If you leave it connected when setting up the ECM in the closed loop area the ECM will adjust the AFV value and screw up the tuning Remember to reconnect it when you have finished The Buell ECM must be tuned for 14 7 1 Air Fuel mixture in the closed loop area Tuning for anything else will cause the ECM to set the AFV to correct it End result will be incorrect maps outside of closed loop and potential risk of engine damage If the dyno operator can measure front and rear cylinder mixtures independently then go for the best he can do If not make sure both cylinders get the same changes or you could run front spot on and the rear lean Always check the AFV value after tuning it should be at 100 as the O2 sensor has been disconnected Test ride the bike ensuring you do some closed loop riding then check the AFV again it should be between 90 and 110 CARE It is known for a Buell to be setup perfectly on the dyno with the O2 sensor connected
46. therwise PC Interface lead To connect ECMSpy running on a PC to your bike you need a special lead The ECU on the bike uses a TTL 5V serial data port NOT RS232 To connect to you PC you have to convert the TTL to RS232 data levels There are several ways to do this Use a MAX232 level shifter chip and build up a little electronic circuit powered from the PC RS232 COM port If you do this use the MAX232E device as it is ESD protected Use a FTDI interface lead this connects to you USB port emulates a RS232 COM port and provides 5V TTL signals direct FTDI Drivers The required drivers can be found here http www ftdichip com Drivers VCP htm The correct driver type is VCP assume you will need administrator rights to install the driver FTDI offers various installation guides in their library http www ftdichip com Documents InstallGuides htm Page 5 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience There s one trap if the driver installation is interrupted after installing the USB driver this is the first part of the driver installation the virtual COM port driver has not been installed but you will not get the usual New device found dialogue in windows if you unplug replug the cable and therefore never get asked to specify
47. ting any testing Using MegaLogViewer to optimize your fuel maps MegaLogViewer is some excellent software written by Phil Tobin to help analyse logfiles from MegaSquirt fuel injection and to assist in creating optimized fuel maps Download it from http www ideasandsolutions biz MeqaLogViewer The current logfile format from ECM Spy is almost suitable for use in MegaLogViewer but needs the following changes AFV to Afr EGO Corr to Gego EGO Volt to 02 Note the capitals are important If using the Palm version for logging we found that the voltage values for the O2 sensor were showing as 465 instead of 0 465 had to correct this in Excel before using the data After making the changes above open MegaLogViewer and open the modified logfile Next Open MSQ file and load in your fuel maps as they were running whilst logging the bike Here s an example of Megalogviewer with data loaded Page 36 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience a MepaLogViewer File View Optons Quick Views Graph 1 RPM Calculated Fields 20070313 1946 log Help Record 54 of 243 Zoom 8x Play speed 100 0 AFY100 EGO ADC 129 Eraso Bron 20 Sec 239 TPSdot 134 unkrvwnt 31 unkren21 16 unkervern4S 232 unkrrenS2 3 unkrenb0 192 unkrenB0 2
48. tly enhance your Buell Experience EcmSpy Y 1 7 8 Options Extras Help Load Map Save Map oF 02 03 00 05 os o7 08 08 04 08 oc op o 00 00 00 32 4B A 03 7B 04 18 01 394 OO F4 01 55 OO 6B 01 03 64 73 55 OC 14 50 FO 96 FF 00 96 64 32 64 64 DA 01 18 50 28 55 D4 AF 50 64 DC 10 64 32 28 64 OF 00 OF 3B 14 3C 60 3C 2C 3C 6E 3C 03 32 32 A5 4C 68 64 FF 64 05 03 1E 3E 64 78 OF 14 05 04 62 82 63 AA 01 06 6C 02 04 04 2E 04 Ad 08 03 22 OB 03 0B 4C 04 52 0D 00 09 00 08 SF 00 03 01 01 01 01 00 7D 5A 52 4A 44 00 72 O6 00 04 01 03 01 58 02 01 00 AO 7D 5A 78 3C 3C 00 3C AA 50 50 64 78 4F 64 64 64 6E 0C 30 15 15 15 28 16 OK now copy it back it up and save it somewhere safe Page 11 of 48 Buell TuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience Fuel Maps The Fuel maps are the most commonly modified areas of the ECM Back them up now even though they are included in the full EEPROM maps Whenever you modify the ECM always save the Fuel Maps so you can go back to them if needed for reference Use a filename which makes sense so you can remember which map to go back to Whenever you select Save Map on the fuel maps it will save both front and rear maps To save the Fuel Maps Connect to the ECM Select th
49. will give you a lecture on choosing the same COM port for two different bits of kit but we need not worry about this as you don t have both plugged in at the same time Then click OK then OK then File Exit then OK on System Properties Then in ECM Spy click on Options then Communications or on the communications button and select the COM port you have assigned If this was your problem it should be solved Page 7 of 48 BuellTuningGuideV 1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience An Introduction to ECM Spy The Menu System The ECM Spy menu system is relatively self explanatory unless you failed to select English when installed If the language is in German just click on the Program Options icon Now select English from the language drop down list and click ok EcmSpy V 1 7 8 Fie Options Extras Help IRVA MO Overview ECM Runtime Diagnostics Eunctions Fuel Maps Other Maps EEPROM A OA The Icons from left to right are R Q 14 15 H a Connect Disconnect Program ECM Query Communications Logging Exit Options Options The Menu Options are as follows Options Extras Help extras r Load Map Communications v Demo Info Options Extras Save Map Program About Bike Lo
50. y affect what you are doing If the AFV is on 110 when you start tuning all the work you do will result in a fuel map which will be wrong if the AFV sets itself back to 100 later End result you will be running weak Reset the TPS This value can change periodically on a Buell therefore make sure it is correct by resetting it before you start tuning Failure to do so can lead to you wasting your time from now on Remove the Headlight Fuse This will save a lot of wasted battery power if you are constantly leaving the bike switched on without the engine running Not essential but wise Use the ECM Runtime window to check the following parameters before tuning Page 27 of 48 BuellTuningGuideV1 6 doc 12 03 2008 CARE Modifying your ECM will invalidate warranty could damage your engine and is performed entirely at your own risk However getting it right can significantly enhance your Buell Experience EcmSpy Y 1 7 8 EER Fie Options Extras Help 310 1 Diagnostics Functions Fuel Maps Other Maps EEPROM TPS RPM TPS volt 5 1 843 1 06 TPS TPS 8 Bit AFY 4 TE ES A Spark Advance Front ve Value Front X Injector Pulsewidth F ms Spark Advance Rear ve Value Rear Injector Pulsewidth A ms BAS Volts Inlet Air Temp C Air Density Corr 2 Cold start not 100 1 23 23 Ik Wait for engine to Battery Volts Engine Temp C warm up before 13 9 101 tuning Ontime Seconds EGO Voltag
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