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Installing Curve Devil

1. Anaheim CA USA Curve Devil User Manual Revision E4 01 28 09 For use with Curve Devil Ver 2 0 2 4 or higher Advent Ignitions Inc m 3154 E La Palma Ave Suite F m Anaheim CA 92806 Table of Contents instalo Curve DS as 4 SMOG AA 4 MAS As A AA 4 Installing USB drIVeT ooooooooononooonccccnnnnnnnononnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnness I USB driver installation Windows XP or Vista 00077 aa I Using the Curyo Devil Project Genera La idea 8 nn 8 SARUNG ao 9 Curve Devil Directories and files ras 9 COPS MAA new Project atte dais 9 Launch Cure DEV spot AA 9 Edie Data FeS strict EE toi 10 CUNANAN N E A E E 10 E UE a AA ANAN AA E 10 Copying data Hom ANON Project masa AGA AA Aka AN 10 PSM IPOM MIMO TADISS orita dai 11 Editing the ignition timing tables seminario 12 Dahan AA AA 13 Functions that modify the Ignition Timing Curve coccccnnnnnnnnnnnnnnnnneninininnnnnanennnnnonanonnnnnnnnnnnnss 13 TPS Throttle Position Sensor u 1111111111111 a 13 ANA AA 14 Timing Correction Altitude Timing Correction 2 XX a 14 Ko AE ANG AA ANG NAA 15 a a aa coo rss 15 TWO tae LUNG AA ANA O E 15 Low Speed Limiter Hole NON iia 15 LOST GINS MA AA AA 15 Setting Li m t RPMs asiaticas loans ti sand cin dolosa caracte 15 Low PE IMM ds 16 A eE PP A 16 der ai O ANO A A 16 Destenimo a Limiter alcoi dro an 16 Pal
2. For example when optimizing a new timing table you can employ the Timing Correction to advance or retard the entire curve as a way to determine if a section of the curve table needs tweaking without having to edit entry points of the curve table Example 1 Engine is soft or loosing power Enter 1 or 2 in the Timing Correction window then run the engine in the problem RPM range If performance improves edit your ignition timing table to add that amount more timing Example 2 The engine is detonating or otherwise has too much timing in an RPM range Enter a small negative timing value in the Timing Correction window like 1 1 7 2 5 and see what happens A negative number offsets the entire curve downward by the entered value 14 Rev Limiters The T4 ignition system supports three special purpose rev limiters e Single Stage Limiter e Dual Stage Limiter e Stutter Limiter Hole Shot Single Stage Limiter This is similar to the limiters in most original equipment ignitions except you have complete control to customize the limit RPM and how the limiter works such as softer or harder Two Stage Limiter A second programmable limiter is appended to the single stage limiter to provide you more control of engine over rev The first stage limiter is typically set up as a softer limiter to just smooth out the short bursts of over revving When the engine becomes unhooked for more than a short time the RPM wi
3. You have chosen to open El Setup msi which is a Windows Installer Package Save Setup msi to your desk top or other from http www adventignitions com convenient location Would you like to save this File 7 F i Curve Devil Welcome to the Curve Devil Setup Wizard The installer will guide vou through the steps required to install Curve Devil on your computer 4 Navigate to where you saved Setup msi and Click on filename Setup msi see Figure 3 WARMING This computer program ie protected by copyright law and international treaties Unauthorized duplication or distribution of this program or any portion of it may result in severe civil or criminal penalties and will be prosecuted to the masimum extent possible under the law Figure 3 is Curve Devil 9 In this screen see Figure 4 the computer 1s ready to write the Setup msi to the directory shown in Select Installation Folder the dialo g box For non Vista OS The installer will install Curve Devil to the following folder le t i t do tha t click gt Nex t To install in this folder click Next To install to a different folder enter it below or click Browse Folder VISTA users C Program Files Advent Ignitions Curve Devil You must edit the Folder line in this window to read C Advent Ignition Curve Devil Install Curve Devil for yourself or for anyone who uses this computer Everyone Just me This
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5. altimeter modifies the ignition timing curve by adding timing as the vehicle altitude increases The user may modify both the altitude values and insert any timing values as desired Altimeter o Po 2 2 2 2 o Cc oc co oc LL ES Timing Correction Altitude Timing Correction In the case where your vehicle is at high altitude usually higher than 3000 feet you need to add 1gnition timing The timing correction feature see Figure 14 allows you to add or remove timing from the entire timing table as required for altitude Add timing for higher altitude to provide a longer fuel burn time to compensate for the lower air density and oxygen content of the air oo 4 0 NA a aoa o0 DQ a a aoa o oo a aojyoyojyo y ca wo ro po mo om wo lo ollo ollo co oC aao 77 a a NN AE a 0 2 2 xD OCIO O O Fi 13 Entering a timing correction value To advance timing enter a positive number El Entering 3 8 will change 24 timing to 27 8 To retard timing enter a negative number El Entering 1 7 will change 24 timing to 22 3 To enable Timing Correction the Altimeter must first be de selected then select Timing Correction in the Feature Enable window Another use for the Timing Correc Timing Correction accepts either positive or negative values to one decimal place See Figure 14 This timing control can be an important aid during curve development
6. freely distributed and used to develop T4 ignition control projects You could have a friend anywhere in the world develop T4 projects and e mail them to you Or share projects with other riders who have a T4 ignition Q a naa alla A fy 2 A rA m ma a e LG I x J G 5 g BA NI UULCI The process of designing aT4 project then downloading it to your T4 ignition is straightforward and logical e Launch the Curve Devil and open a new project e Select the specific functions you wish your computer to control e Enter the required data in each function window either by typing or cut and paste e Compile your project convert your data into something the ignition understands e Connect the T4 to your computer via a USB cable T4 can be installed in the boat e The GREEN light comes on telling you the Curve Devil knows your T4 is connected e Press the Read Write button and follow a couple of instructions Press PROGRAM 10 seconds and you re done A Dita dui I Products Inc Wed site best viewed in Internet Explorer at resolutio Click on product image to view information 1 Open the Advent Ignitions website www adventignitions com 2 On the home page New Curve Development Software For T4 Ignition Left click on the image as shown in Figure 1 i aes z moe Opening Setup msi 3 On the Opening Setup msi window Click gt Save File see Figure 2
7. novel approach to the heating issue The standard engine timing table which is based on engine RPM 1s replaced with a timing table that is based on time The expected duration of a race is divided into 6 time periods or segments and related ignition timing values The segment time clock is set in 0 01 seconds 10 hundredths increments up to 9 99 seconds The Drag Timer DT requires a handle bar mounted push button switch to control its operation The Drag Timer button works as follows Mode 1 Start engine with DT button released is in the starting line mode engine timing set by Starting Line value see Figure 30 This timing value is not affected by engine RPM The engine RPM is limited by the rev limiter settings Mode 2 Depress and hold DT button at starting line Engine still has Mode l engine timing rev limiter is changed to low speed limiter 2850 as shown in Figure 30 Pin the throttle stutter limiter is activated Mode 3 At race start Release DT button rev limiter changes to standard limiter segment 1 clock and engine timing is active see Figure 31 When segment 1 times out the next segment is active with its clock and engine timing This process continues until all a segments are completed If fewer time segments are needed simply enter 0 0 in the segment time windows to disable that segment Segment 6 is disabled in Figure 31 Mode 4 After the last segment times out th
8. set to turn ON and OFF at any RPM you program There is no interaction between the different relays or their settings Relay Modes of operation Normally you would think about an external device being turned on at some RPM and then turned off at a higher RPM The T4 relays can be controlled in that way and they can be turned on at some RPM and turned off at a lower RPM Mode 1 Relay ON low OFF high turns on the relay at a low RPM and holds it ON until the higher OFF RPM is reached The relay will be on when ever the engine RPM is within the ON and OFF RPM limits see Figure 26 relay 2 and Figure 27 relay 3 Mode 2 Relay ON high OFF low is turned ON when the engine RPM is above the ON RPM setting and remains on until the engine RPM drops below the OFF RPM value See Figure 26 relay 1 When using mode 1 always set the OFF RPM 50 or more RPM below the ON RPM This The Exit RPM should be set at 50 or 100rpm below the Enter RPM This allows the engine to have a well behaved limit action when the engine is running at or near the ON RPM value If the ON OFF RPM are set to the same value the device connected to that relay channel would turn ON and OFF very quickly resulting in uncontrolled and erratic operation To resolve this problem OFF RPM setting should be set at 50 or more RPM lower than the ON RPM This allows the relay channel to have a well behaved smooth ON OFF action Power Valve A power valve is a device that changes the exhaus
9. to 48 5 Minimum timing is violated by 12 2 6 9 3 Maximum is violated by 35 48 5 10 5 The example above shows that the actual ignition timing the engine can be subjected to can be well outside the safe limits With the Limits function enabled and set to the proper values the 1gnition timing will not exceed these values regardless of what the various timing control sources are telling the ignition to do Read further to learn more about sources of timing control in your T4 ignition Curve Devil warns of out of range timing values The last step in making a project before programming your ignition is depressing the Compile button When you take this action the curve Devil first checks all active curve tables for values that are out of range If any are found an error message is displayed and the offending timing curves are opened so you can easily edit the data Functions that modify the Ignition Timing Curve TPS Throttle Position Sensor If your vehicle is fitted with a TPS you can utilize it to control deceleration detonation or performance advantages The values in the TPS table are meant to retard remove timing from the ignition when you release the throttle And when the throttle is pinned the TPS has no effect on the ignition timing see Figure 12 However you are free to do as you like here 13 Altimeter The altimeter shown in Figure 13 is an option in most T4 ignition models The
10. OTO TOTOO TOTO CU CU a s O i pma img img mn gmn mg gmn gmn gmn pmp pmp gmn mn emn mg mn gmn m Oopoyor DQ DD QD o 16 li gmg NG AA oy oy AA AA AA NA AA AA o Mia Mam E pirg pan IA Un O Dao O JLo Ww PF O Ad a KHO do HO NB FF OO cd GB HQ LW pr FO PO uo yr co Wa fe TIN ee Os Os os os for far fa fa LA LO LO LO foo o CO Pe Pe Pe Fe O o oo e Cut 8 Paste To eliminate the need to input the same numbers several times you can design one table and cut and paste into the other tables then modify these as needed e Copy curves from another project using the Import Data command see figures 5 and 6 12 O Timing Limits This function is designed to protect your engine from ignition timing values that could cause damage This is an important function and should always be enabled This function 1s not required where only the curve table defines the E ignition timing However in more complex ignition configurations such as when TPS and Altimeter timing table modifiers are used to increase engine performance you may not know the actual timing your engine 1s going to get With the Timing Limits function you can protect against several sources of ignition timing that can add up to potentially damaging values Limits Example Engine safe timing limits of Min 9 0 Max 38 BTDC Min Max Curve table timing range 9 3 to 34 5 TPS timing range 6 7 to 0 0 Altimeter range 0 0 to 14 0 Total possible timing 5 2 6
11. al ways to design a limiter that have the same result The simplest design is often the best The following designs provide the same performance Limiter in Fig 18 repeats a 2 rotation pattern 3 times then repeats the sequence Limiter in Figure 19 acts the same as Figure 18 but has the 2 rotation pattern i Figure 19 with the repeating patterns disabled Limiter in Figure 20 is a different 2 rotation pattern but still reduces the engine power by the same amount as the others All three designs fire all cylinders to ensure any unburnt fuel is burnt while reducing engine power to 50 Soft Mild Limiter The Limiter in Figure 21 fires 3 misses 1 then repeats Engine power is reduced to 3 of 4 or 75 power Hard Aggressive Limiter The Limiter in Figure 22 fires 2 misses 4 then repeats Engine power 1s reduced to 2 of 6 or 33 18 Using the Two Stage Limiter A two stage limiter 1s useful if you re riding in heavy surf or otherwise experiencing cavitation The Stage 2 Limiter becomes active when the RPMs rise to the transition point RPM 5500 in the stage 1 window see in Figure 23 The Stage 2 Limiter design should be a harder more aggressive limiter maybe even a No Fire limiter to strongly hold the engine RPM in check Fuel will build up during this period however when the RPMs come down into the Limiter 1 region 1t will burn this fuel Then when the RPMs drop out of Limiter 1 the engin
12. detonation and possible engine damage With the Curve Devil you can set the range of timing E Na zm adjustment of the Curve Offset control device It is 7 advisable not to make the adjustment range too wide or you might inadvertently add too much timing and damage your engine You have complete control of the range of adjustment from as little as 0 8 of adjustment in 0 1 steps to 40 in 5 steps Possible adjustment ranges are shown here Figure 24 is made to add timing from 0 0 to 1 4 in 0 2 increments while Figure 25 shows a range of 3 0 to 4 0 in 1 0 degree increments 19 Relays It 1s often necessary to control peripheral devices to support enhanced or at least proper engine operation In most cases these devices are operated based on engine RPM Devices that can be controlled by the T4 s Relay function are water control valves fuel pumps sump pumps and nitrous control valves Each relay 1s capable of controlling an external device that operates on 12Vdc battery and draws 1 0 amps or less The T4 provide 2 or 3 programmable relay control channels depending on Ignition model When you select Relays form the Function Selection List the widow in Figure 26 will be placed on the work space This window allows you to set up and control relays 1 and 2 If your engine does not have a Power Valve you can select that function see Figure 27 to control relay 3 ES 3150 Each relay is
13. e ignition timing is changed to End of Race see Figure 32 and remains at that value until the engine is stopped The rev limiter is still the standard limiter Note Once the Drag Timer button is released the timing sequence starts even if you remain on the starting line Depressing the button again will have no effect The engine must be stopped and restarted to reset the Drag Timer button function ZZ Project Information note pad A formatted note pad is provided for the project designer to make notes about the specifics of a project Figure 33 shows the various data fields that help guide you through the pertinent information that is useful to know when you revisit a project to remind you of the what where why of this project Access the note pad from the EDIT tab on the tool bar then select Product Info A EF Project Info Dan Fitzgerald et World 350 165 Ibs Triple FP we Recreation ve Mild low rmid 6 5 deg to 5780rpm 12 6 deg ending 24 deg to 5375rpm 11 deg ending not Installed This is test 3 setup for mid range performance on lake with temps around 85 deg with 175 Ib rider 23 eee Top Dead Center ADVE calibration procedure Anaheim CA USA Engines not in the Curve Devil library Custom Engines or Sea Doo amp Ski Doo Engines Engines that are listed in the Curve Devil already have the calibration value entered and the user need take no further action Any engine that is not l
14. e is running without any hesitation or bogging caused by unburnt fuel in the cylinders It is also important that the engine has sufficient RPMs when it comes out of rev limit and therefore has enough inertia to re hook without loosing much rotational speed The effect is that you don t have the sense of flying over the handlebars at that moment Curve Offset This feature 1s used during ignition timing table development Its use requires an optional hardware device that is a small box with a calibrated degree dial By adjusting the control similar to a volume control the user can directly change the engine s timing Having the ability to adjust your engine s timing while riding provides you with a means to tune your timing table for peak performance Example You have a timing curve under development and are having a problem with bogging at 6750RPM Rather than simply guessing as to how much more timing to add you take the vehicle out and run it in problem speed range At the same time you turn the Curve Offset adjustment and add timing until the engine performs as you want it to Note the value and return to base and edit the timing table in the Curve Devil The Curve Offset must be used carefully When removing timing there is no problem However when adding timing you must be careful not to quickly decelerate or accelerate at RPMs other than the range you are working with Quick deceleration or acceleration could result in
15. has Inverted electrical polarity if the Inverted test project value is lowest number rity is determined from the project name which produced the larger TDC calibration O The state of the CPS calibration and polarity must be set properly in the Curve Devil each time you make a project 26 Call or e mail Advent with the results of these tests and we will add them to the installed engine list Adding your engine makes developing projects easier and more reliable by having the CPS cal and polarity automatically set for you Please have the following information available The two timing values derived from the measurements Type of vehicle Jet Sk1 Snowmobile etc Vehicle make Vehicle model Vehicle year Engine displacement Number of cylinders Number of ignition coils Reassemble engine Make ready your engine remove the timing tape and pointer reinstall the spark plugs and ignition wire caps O Do not attempt to start or run the engine with the NORMAL or INVERT projects loaded into the T4 ignition Severe engine damage may occur Note You may connect the USB cable and download data with the ignition installed Battery connected and engine must not be running When downloading is complete you must unplug the USB cable from the Ignition module in order start and operate the engine Advent Ignitions Inc 3154 E La Palma Ave Suite F Anaheim CA USA 92806 web site www adve
16. ight fires If the pointer is between marks determine within 14 to Y where the pointer is Write the number down Accuracy is important here Perform the second TDC 1 Program the T4 ignition with the project named Inverted T4 2 Press the start button to cause the engine to turn over 3 Read the timing tape value under the pointer as the strobe light fires If the pointer is between marks determine within 14 to Y where the pointer is Write the number down Accuracy is important here Note The two measurements should be very different from one another One will be in the range of 5 to 20 and the other could be 35 to 75 l ANT A f a aan Ba CC ATS ave ACCOM PD SFELILINIY 4 Set the test cylinder to TDC once again confirm that the pointer is at the TDC mark If the pointer is not on TDC the tests must be conducted again to guarantee proper accuracy O If you are having any problems performing these measurements please call Advent for assistance Proper results from these tests are critical to proper engine operation What do the test results mean e The smaller of the two numbers is the ignition timing during cranking e The larger number is the TDC calibration value the crank shaft reference angle from which all ignition timing is measured Cope The CPS pola number e The CPS has Normal electrical polarity if the Normal test project value is lowest number e The CPS
17. isted 1s still supported by the Curve Devil by selecting Custom engine from the manufacturers list When selecting a custom engine the user must also enter the TDC constant and the CPS Crank Position Sensor polarity information for that specific engine This document instructs you on how to measure the TDC constant value and determines the CPS electrical polarity steps are required to set up and measure an engine s TDC constant and ie el The following electrical polarity Compile test project 1 Launch the Curve Devil then open a new project File gt Open gt New 1 Select Vehicle gt Custom 1 Coil Select Model gt 2 cyl Set TDC Constant 0 Select CPS Normal On the Feature Enable window select curvel only Do not change the default timing values 0 0 Do not select any other Features Save the project File gt Save gt Normal 7 On the tool bar click the Compile button og ae 8 Select CPS Inverted 9 Save the project File gt Save As gt Inverted 10 On the tool bar click the Compile button 11 Connect the ignition module to the computer using a USB cable 12 Next click on the Read Write button this opens the download window 13 Click on the Load T4 File button in the download window Navigate to the folder where projects Normal and Inverted are located Double click on the project name Normal 14 Click on the Program Device b
18. it RPM Exit Limit RPM Rotation 1 Rotation 2 Rotation 3 Rotation 4 Rotation 5 Rotation 6 Stutter 3000 Cylinders Stage 1 Limiter Stage 2 Limiter 7235 7550 Cylinders 1 2 1 D D 1 il 1 0 1 LL MA Relay 1 Cylinders ES Relay 2 1900 3780 5650 5425 Feature Enable Stutter Rev Limiter Rey limiter 1 Rev Limiter 2 Curve Table 1 Curve Table 2 C Curve Table 3 C Curve Table 4 Drag Timer C Timing Limits Throttle Position Sensor TPS C Curve Offset C Operating Altitude C Altimeter Relay 1 Relay 2 C Electroinc Fuel Injection EFI C Power Valve el Windows XP 2000 or Vista 1024 x 768 Video 512Mbytes DRAM minimum 800Mhz processor USB 2 0 port Leth wine EN YA W J had ME KR l kd SY Gd PE KAN SD LO es a a ar sear Ty pe NA AY Be fore you start making your first project you should make folders to hold the data produced by the Curve Devil It is suggested that you make a folder on the foot directory of the C drive 1 Using the Windows File Explorer utility navigate to the root directory of C 2 Click on FILE gt NEW gt FOLDER A folder named New Folder will appear Change the folder name to Advent Projects This is the folder where you place all your project files If you want to further divide your projects folder into differe
19. ito the TS WAMU TS uri 17 D sieniea Rey Limiter prole ua eos 17 Considerations when designing a rev limiter profile ccccccceesseseeeeseeeeeeeeeeeees 18 How aggressive do you want the rev limiting to be 18 BORG Vem MIMD tapia 18 Had AE NE LIME cita 18 Uaine ie BN a Later ria 19 E PO In II pe ees E E on ence seam ade 20 Relay Modes of OPTION saccce nocanacsnsnessassenasassnsnenseooossmesoucennencsoneceneannenoeenesemeneneneratanneesintanes 20 POWT VANE oia 20 Determining the Power Valve Open RPM value ula 21 Aa Aa ARA 21 Project mtormation Note pad sais 23 Find the nsme s TDC GONG AkO Nh 24 Sol AA In EEE 24 Comp ke to EO ltda 24 Download test program 1 ococcnccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnns 24 Mount the timing tape to the PTO or coupler u aaa 23 Take mn NGAUN dentadas E 25 DEE UO o make me AA 25 Perform the second TDC Calibration measurement ocoocccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 26 Recon TDO Setting note 26 What do the testresults AGAIN ice 26 CE PO ads 26 Reassemble engine asa 27 PR eee ee PA Installing Curve Devile ADVE Anaheim CA USA Once you have selected the features you can then populate each one with the data that suits your needs When you have entered necessary data you can save the project to disk and proceed to download the data into your ignition via a USB cable The Curve Devil can be
20. ll rise to the second stage limit RPM and engage the second stage limiter This limiter is usually set up to be much more aggressive to hold the engine at that crossover RPM If there are problems with your current limiter loading up the engine and bogging when it comes out of the limiter the Two Stage Limiter is the answer Low Speed Limiter Hole Shot This limiter is used to hold the engine RPM at an acceptable level when the vehicle is on the starting line The rider depresses and holds the low speed limiter button then pins the throttle When the race starts the limiter button is released the throttle is already pinned and off you go to the head of the pack The low speed limiter can be activated only while the engine is running If you have a false start or release the button inadvertently you must re start the engine to reactivate the Stutter Limiter The low speed limiter works as follows Start the engine engine runs normally over the full RPM range When in position at the starting line depress and hold the low speed limiter button Pin the throttle the limiter holds the preset RPM With the limiter button depressed you may run the engine at any RPM up to the limiter On GO release the button the engine goes to max RPM quickly AR WN O As a safety feature once the low speed limiter button 1s released depressing the button again will have no effect You must stop and re start the engine to re activate the low s
21. lled automatically when the Curve Devil is installed Continue to the next section Anaheim CA USA Using the Curve Devil Project Generator The Curve Devil is the software application that allows the user to add edit or remove and all of the functional capabilities of the T4 ignition It should be noted that not all features are available in all versions of the T4 As an example some engines don t support separate timing curves for each cylinder while others do The Curve Devil is designed to work with all models of T4 The Project The Curve Devil is used to make and edit project files A project is a list of selected functions and data which you input via the Curve Devil The projects data is then downloaded to the T4 ignition via the USB cable Think of the project file as a spreadsheet file In a spreadsheet you enter data in an organized manner This data then causes the spreadsheet to produce results The Curve Devil is much the same except the output of the project file defines how the ignition will function with various kinds of external inputs such as RPM throttle position temperature and altitude P800 14 prj Alt Timing Cor Vehicle Make CURVE 1 RPM Cyl1 Cyl 2 25 0 25 0 5 0 5 25 0 25 0 25 0 RPM Cyl 1500 1750 a 6 6 8 8 8 9 8 38 9 8 3 ga 8laj8 9 8 ala 8 2 3 7 9 8 3 8 5 21 0 22 0 Rev Limiter Enter Lim
22. n the right applies the same pattern in rotation 1 then loops back on itself and repeats By entering an X in any cylinder box of rotation 2 all following rotations to the end are disabled Engine power is reduced to or 50 power These two limiter profiles 1 1 0 0 sequence are equivalent The one on the left applies the same 2 rotation patterns three times 3 amp 4 the 5 amp 6 then repeats from rotation 1 Editing the Rev Limiters Note the legend descriptions in the white box at the bottom of Figure 14 e 0 NO Fire e Fire e X Disable this rotation and through rotation 6 To change the values simply place the cursor over the desired rotation cylinder and left click Each click will cause a 0 1 X to be displayed Repeat for all other cylinder boxes If you enter a single X in any cylinder box within a row all cylinders in that row and through rotation 6 will be disabled see Figure 16 To re enable one or more rotation rows place the cursor in any cylinder box in the first disabled row then click to place a 0 or 1 there to enable that row see Figure 17 Designing a Rev Limiter profile Designing a rev limiter is very important to the engine operation A good design will protect the engine from over revving damage while not loosing excessive speed or not allowing the engine to bog down with excess unburnt fuel in the cylinders You will find that a good rev limiter design will allow you to make your tu
23. nt groups simply make additional folders inside the Advent Projects folder These folders can be used organize different customers engine types or vehicle types These project folders will contain the two types of files produced by the Curve Devil Filename prj Output file when you save a project When you select File gt Open you will see only filenames with the extension prj since these are the only file types that can be opened by the Curve Devil Filename T4 The output file when you Compile a project When you select the Read Write button to begin programming your ignition the file selection window will only display files with the extension T4 These are the only files that can be used by the Curve Devil to program a T4 ignition 1 Left click on Tool Bar File B New B Project see Figure 1 ov e Save H LIN Save As HY Import Data Exit 2 Select Vehicle Make fig 2 then Model fig 3 then of Cylinders 2a If the Vehicle Make and Model are not on the lists choose Vehicle Make Custom x coil then number of Cylinders Vehicle Make Model Cylinders Vehicle Make Model Cylinders Custom Multi Cail Fiaptor 660 Feature Enable 3 Feature Enable List box Figure 4 opens select from the list of available features those you want to use for the project ES Open some or all of the functions you will be editing by using the function selection buttons Edit all ap
24. ntignitions com e mail info adventignitions com 00 1 714 630 0446 Voice 00 1 714 632 5438 FAX T4 Instructions users manuals Curve Devil inst Rev e Curve Devil e3 odt 27
25. peed limiter Programming the Limiters Overview e each of the limiter values may be set in 1 RPM increments Limiter action 1s fully programmable from very soft to hard limit Each cylinder within each limiter revolution can be set to fire or no fire Rev limiter can be set from 2 to 6 revolution limiter loops Provides variable limiter action to your requirements no other ignition can do this Setting Limit RPMs Each of the three limiters have different types of RPM settings as required by the type of limiter 15 Low speed limiter This limiter has a Enter RPM only where Enter means the lowest RPM where the limiter is activated and remains active at any RPM above that value In normal usage when the limiter 1s active the engine will either be at idle or the throttle will be fully pinned where the engine is trying to go to a high RPM Stage 1 Limiter This limiter has an Enter and Exit RPM The Exit RPM can only be set to an RPM less than the Enter RPM There 1s no case where you would want to have the limiter ON then OFF at a higher RPM The Exit RPM should be set at 50 or 100rpm below the Enter RPM This allows the engine to have a well behaved limit action when the engine is running at or near the Enter RPM value If the Enter Exit RPM are set to same value the engine would quickly move in and out of rev limit resulting in uncontrolled and erratic rev limiter action Two stage limiter The Stage 2 limi
26. propriate data fields to configure the ignition s operation as 0 5 16 27 3 are supported Negative values timing after top dead center are not allowed Example 1 5 Values may be as large as the TDC Constant 5 Example 58 5 53 Ml Mm dl di dl A E ra a f n m O JA ntering data into the curve tables where several Mian helpful when e entries are often the same value or copying one table to another This 1s a handy way to reuse some or all the data from another project Use this feature to copy selected function data from any named project to the current project 10 To copy data begin by selecting FILE gt IMPORT DATA see Figure 5 Then answer yes or no to each function prompt that appears Entering Yes will copy that data No will not copy the data into the current project see Figure 6 itve ey A directory window opens and you then negotiate to the folder and file you want to copy data from You will be queried to import each function s data click Yes No as needed Open Close Mery Save E Cylinders Save As Import Curve data Figure 6 6 Ignition timing tables The T4 ignition supports separate ignition timing tables for each cylinder see Figures 7 8 and 9 This means simply that each cylinder can have different ignition timing depending on specific physical features such as intake exhaust and cylinder cooling differences The
27. re Affix the timing tape such that the arrow is pointing in the direction of rotation and the TDC mark is near the 12 o clock position Locate the area on the engine where the pointer will be mounted This should be an area about 2 to one side of the TDC mark on the timing tape Remove any oil and dirt from the mounting area with the alcohol wipe provided Hold the pointer in the desired position on the engine and firmly press the gray clay over the pointer s triangle shaped mounting area to secure it in place At a point about 15 12mm from the edge of the timing tape bend the shaft of the pointer 90 such that the bended rod 1s parallel to the timing tape Slide the rubber grommet with needle pointer along the rod to align the needle pointer with the TDC mark on the timing tape Accuracy is important here Be sure the pointer is close but not touching the tape Check to be sure the clay is holding the pointer firmly in place Set up the timing light per the manufacturer s instructions then clip the probe on the spark plug wire of the cylinder you set to TDC Note For twin cylinder engines with one coil you may clip the probe on either plug wire 4 Perform the first TDC Calibration measurement Confirm that you downloaded to the ignition the project Normal T4 if not do that now 1 Press the start button to cause the engine to turn over 1 Read the timing tape number under the pointer as the strobe l
28. rns quicker with less loss of power and minimize pump cavitation when the pump unhooks in heavy chop 17 Considerations when designing a rev limiter profile How aggressive do you want the rev limiting to be Ideally a rev limiter would hold the engine speed at the exact limit setting In real life however the engine RPM will generally increase when the limiter is engaged Of course this 1s not true 1f the limiter disables all coil firing which is the method used by some ignitions The result of no fire limiter is that the engine RPM and speed will plummet as well as bring down the nose of the boat while producing the feeling you re about to be launched over the handle bars These are things that should be avoided at all cost when racing The other undesirable effect 1s that the engine will load up with unburnt fuel This fuel will likely cause the engine to backfire or bog when the cylinders start firing when the limiter shuts off A good limiter design will fire the coils often enough to burn all the fuel delivered to the engine during the limiter time This firing may result in some rate of increase in RPM The second stage limiter can then be used to further limit the increasing RPM The Limiter should be designed so each cylinder is fired often enough to keep it clear of un burnt fuel and seldom enough to keep the RPMs from increasing too much and to keep the nose up so as not loose too much speed There are sever
29. t port timing based on RPM This port timing change enhances the power curve providing better engine performance 20 A power valve controller is built into certain models of T4 ignitions that are designed for engines that have power values The vehicle manufacturers have designed their power valves to have a soft smooth engagement In contrast the Advent T4 power valve is a SNAP profile This means that the T4 opens the PV as quickly as 1s possible to get the best possible performance hence the name SNAP The Snap method is designed for racing applications to give the rider a firm solid boost in power rather than in a slow mushy manner You ll feel the snap in your arms Setting the power valve snap RPM is simple knowing where to set it is a bit harder Determine the Snap RPM by following the procedure below then set up the Curve Devil Power Valve function 1 Enter an RPM in the PV Open box of the P Valve window see Figure 28 2 Enter a second RPM in the Close box The close RPM should be set 50 to 150 RPM lower than the open RPM This RPM arrangement is called hysteresis and it eliminates problems with jitter rapid opening closing at the open close RPM The valve can close only when the RPM drops well below the open RPM Experiment with this idea to get the feel you like Determining the Power Valve Open RPM value Set the PV open close RPM at around 5800 to 6000rpm Then ride on smooth
30. ter is used in conjunction with the Stage limiter This linkage provides a single two stage limit action This type of limiter works very well in conditions where the water or snow surface is variable That is to say a mix of lite chop wash board snow and large waves or icy surfaces The limit action starts with the Enter RPM of limiter 1 the Limiter 1 Exit RPM is where Limiter 1 stops and Limiter 2 takes over Limiter 2 remains active at any RPM above this transition RPM Note that the Exit RPM of Limiter 1 can only be set to an RPM higher than the Enter RPM in this limiter mode Designing a Limiter algorithm Refer to the Rev Limiter image in Figure 15 You will note that each limiter has 6 rows labeled Rotation and each limiter has between 1 and 3 columns depending on the selected engine labeled Cylinder Each limiter algorithm can be between 2 and 6 revolutions in length then repeat until the engine exits the limiter The user can define how the cylinders will fire during each revolution Each cylinder in each revolution can be programmed to Fire or No Fire Disabling X any cylinder in a row causes that row and all rows to the end of rotation 6 to be removed from the loop O No Fire 1 Fire x Disable Rotation Figu re 1 5 16 The two limiter profiles 1 0 sequence are equivalent The one on the left applies the same pattern for all 6 rotations then repeats from rotationl The one o
31. upshot 1s that each cylinder can be tuned for maximum power rather than compromising if a single curve was used for all cylinders as is the case for the most well known after market ignition manufacturer Twin cylinder engines that have one 1gnition coil cannot support separate timing curves due to certain electrical system limitations These ignition systems are called wasted spark configuration as both cylinders receive an ignition spark with the same timing on each rev but only one cylinder fires The T4 ignition can accommodate separate ignition timing tables for all engines up to three timing tables as selected in the Feature Enable window see Figure 4 In the case of many two cylinder ignitions with one coil there will be only one cylinder ignition timing table per curve table 11 tables iming t ignition Most of the differences are in the higher RPM range Use the Curve Devil editing features to simplify When you develop curve tables for your engine generally large portions of all curves are the same the data input process Editing the So lojaojalalaelalolalaolololalalalalolololafjalololalafalalafala Y O LO PUD fo fo foo NU NIA Apo fos fm foo fr foo foo fo fo el ee el r Cupos Poy Pos Poy Poy Pos Pos os Jos pol Pos Pos Por Pos Pe pr pr Pr iii dl a 2 2 2 2 2 2 21 2 21 2 9 919 9 91 291 21 29 21 912912121 9 191219191951912 ano la La La La Ww Ww la la Ww wo me Re O wor ee OOOO Poe edo A
32. utton to download the project data to the ignition module 24 Mount the timing tape to the PTO or coupler If Advent has not made arrangements to supply the proper timing tape with your order then l Identify a rotating surface to which a degree marked timing tape can be mounted This can be the PTO or coupler assembly The surface must be easily accessible to a pointing device supplied Measure the diameter or preferably the circumference Accuracy is important here Call or e mail Advent with the following information gt Diameter or circumference of timing tape surface bp Width of timing tape mounting surface at least 4 6mm is required for the tape gt Direction of rotation of this surface from your viewing position gt Make model number of cylinders displacement of engine Contact Advent with the above information and we will e mail the tape to you promptly Take timing measurements Required tools Timing light e Timing tape from Advent e Spark plug wrench e TDC gauge or something else e Scissors e Transparent tape e Alcohol wipes Set up to make measurement l pe 25 Remove all spark plugs then replace the plug cap on each plug Using the length of bare wire supplied wrap it around the threaded area of each plug then fasten the loose end of the wire to an unpainted location on the engine Set either cylinder to TDC using a TDC gauge or other means Accuracy is important he
33. water and accelerate throgh this RPM You will notice one of two things happening 1 As you approach the PV Open RPM the engine power will begin to fall off When the PV opens you should feel a marked increase in power 2 As you approach the RPM you will notice the engine power increasing then fall off when the PV opens The goal is to find an RPM to have the PV open just prior to where the power drops off The result will be smooth increasing power then a big increase in power no lag Drag Timer Settings Alternate PV channel use If your engine does not utilize a power valve the T4 uses the function as a 3 relay and is available for control of devices such as nitrous systems Drag Timer Snowmobile application only This Drag Timer is a unique feature not found in any other ignition It is designed specifically for snow mobile drag racing on dry ground with no engine cooling available The major objective is to produce the most power and keep the engine from melting down during a drag race which lasts as little as 6 to 8 seconds In this time period the engine can become so hot that 1t actually smokes The race is divided into 3 engine operating modes see Figure 29 e Starting and waiting at the starting line e The race e Exiting the race track 21 Each of these three engine modes has a different way of controlling engine ignition timing To control engine heating the T4 ignition and Curve Devil employ a
34. will install the Curve Devil on the CA directory The program will not properly install if Setup msi it is put into the Program Files directory EL 5 ig Curve Devil Confirm Installation The installer is ready to install Curve Devil on your computer Click Mest to start the installation 6 Click gt Next to start the Curve Devil Installation see Figure 5 Software Installation A The software vou are installing has not passed Windows Logo testing to verify its compatibility with Windows lt P Tell me why this testing is important Continuing your installation of this software may impair 7 The notice in Figure 6 is expected or destabilize the correct operation of pour system P s A either immediately or in the future Microsoft strongly Click gt Continue nyway recommends that you stop this installation now and contact the software vendor for software that has passed Windows Logo testing Figure 6 STOP Installation 5 i Curve Devil Installation Complete 8 The Curve Devil 18 NOW installed Curve Devil has been successfully installed Click gt Close to exit installation Click Close to exit Please use Windows Update to check for any critical updates to the NET Framework Installation is complete X Continue to the next section ADVENT Installing USB driver Anaheim CA USA Installing USB driver The USB driver is insta

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