Digital Air/Fuel Ratio Gauge User Manual
Contents
1. 0 05V 0 50 1 00 Lambda 1 50 14 7 airfuel atio 22 1 74 0 000 Volt at Lambda and fe use Lambda GA ES use airfuel atio 5 000 Volt at Lambda 1 500 Factory Defaults Advanced Program This shows the analog output voltages versus Lambda for one of the two analog outputs The graph display is automatically scaled to the selected voltages For each output you can specify a minimum and maximum lambda value and the associated voltages Below the minimum and above the maximum lambda values the output voltages stay constant at the associated programmed voltage By selecting the use Air Fuel Ratio button you can program the curve by AFR instead of Lambda This does not change the programming only the representation of the data When programming by AFR the LM Programmer converts the number to Lambda 9 MTX L_Manual doc before programming the MTX L So there might be some small rounding errors when you open LM Programmer and review your settings in the future Click the Program button to download the new data into the MTX L Once the unit is programmed the Program button will grey out The analog output can be programmed from 0 to 5 volts and from 1 5 to 8 191 lambda Factory Programmed Defaults Analog Output 1 is programmed to output between 0 V for an AFR of 7 35 gasoline and 5 0V for an AFR of 22 39 Analog Output 2 simulates a typical narrow band oxygen sensor The configuration is 1 1 V for a2. In the unlikely event that your Innovate hardware product should prove defective during the warranty period contact Innovate Customer Support at www innovatemotorsports com for a return material authorization RMA or at 800 348 3037 Products returned for service must be securely packed to prevent damage and shipped charges pre paid along with proof of purchase and the return material authorization number to the Innovate repair location as instructed by Customer Service Innovate within a reasonable amount of time from its receipt of your product so shipped will ship to you at its option the repaired product or a new or reconditioned product of comparable or greater specified functionality All repaired or replacement products shall be warranted for the remainder of the original product warranty Disclaimer INNOVATE MAKES NO OTHER EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO YOUR INNOVATE PRODUCT OTHER THAN THE LIMITED WARRANTY SET FORTH ABOVE No Innovate dealer agent or employee is authorized to make any modification extension or addition to this warranty unless enforceable or unlawful under applicable law INNOVATE DISCLAIMS ALL IMPLIED WARRANTIES INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY NONINFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE AND THE LIABILITY OF INNOVATE IF ANY FOR DAMAGES RELATING TO ANY ALLEGEDLY DEFECTIVE PRODUCT SHALL UNDER ANY TORT CONTRACT OR OTHER LEGAL THEORY BE LIMITED TO THE ACTUAL PRICE PAID F
3. MTX L Digital Air Fuel Ratio Gauge User Manual A Warning A The Oxygen Sensor used in this device gets very hot in operation Do not touch a hot sensor Do not let a hot sensor touch a combustible surface Do not use the sensor with or near flammable liquids or gases Failure to heed these warnings may result in severe burns explosions fires or other dangerous events When installed in the exhaust the oxygen sensor MUST be connected and operating with the MTX L whenever the car is running An un powered oxygen sensor can be quickly damaged when exposed to hot exhaust gases TABLE OF CONTENTS NK WEE 3 27 Msta hon neies esera Aee Re chewbbeyseebes tetacent eyed techs eu EEKEREN TAE RSS eE OEREO EREET EEEE AE EERENS OEKE AEA inchbecs ited 4 e WEN LES DE EE A EC Ne alias and RONING EE 4 2 3 SONSOF Ee IEN 5 Keele TEE 6 2 4 1 Calibration Schedule A 7 2 5 Changing the MTX L s gauge face and or bezel cae eeeeaeeeeaeeseeeeetaeeeeeeeteeeees 7 3 Software LogWorks 3 and LM Programmer 8 3 1 Installing SoftWare TEE 8 3 2 Connecting to LM Programmer 8 3 2 1 Analog Outputs ean cer cee E 9 3 2 2 Advanced output programming 10 3 2 3 Customizing your fuel Type 11 3 2 4 Customizing your display range cccccecceeeeeeeeeeeeeeecaeeeeeee scenes caeeeeeaaeseeeeeeeaeeetaeeeeaeeseeeeess 11 3 2 5 Updating the firmware cence cage eeeaaeseeeeecaeeeeeaaesgeeeeseaeessaaeseeaeeeeeeeenaees 12 3 3 Logging data from your MTX L with LOQWO
4. Serial Communication Serial Port Speed Packet Logging Speed Sample Resolution Mechanical Hole Size Software Supported OSs Temperature Max Operating Temperature 8 18 Volt 2 A max 1 A nominal 19 2 kbit sec 81 92 msec sample packet 10 bits 0 5V at 0 1 resolution 2 1 16 52mm Windows 98 ME 2000 XP and Vista 20 to 85 deg Celsius MTX L_Manual doc Appendix B Limited Warranty LIMITED WARRANTY Innovate stands behind the quality of its products Innovate makes the following warranty to purchasers of its products All new Innovate products carry a one year warranty from the date of purchase If proof of purchase cannot be provided warranty will be determined by date of manufacture When Warranty Void This warranty shall terminate and Innovate shall have no obligation pursuant to it if i your Innovate product has been modified or repaired in a manner not previously authorized by Innovate in writing ii the identification markings on your Innovate product have been removed defaced or altered iii your Innovate product was subjected to accident abuse shipping damage or improper use iv your Innovate product was not used or configured as specified in the product manual or v your Innovate product was subjected to operating conditions more severe than those specified in the product manual Exclusions From This Warranty Oxygen Sensors are excluded from this warranty Repairs Under This Warranty
5. Supply Voltage Supply voltage too low for sensor Check your 12V connection for corrosion too low regulation Whenever Error 2 is displayed existing sensor calibration data is discarded 20 MTX L_Manual doc Revision History 1 0 11 18 10 Initial Release 1 1 12 17 10 Added analog output configuration Bezel gauge face installation and new screenshot for customizing the range display 21 MTX L_Manual doc
6. This program is protected by copynght law and intemational teates Unauthorized reproduction oe distribution of this program or any portion of it may resul in severe civil and criminal penakies and vall be prosecuted to the maximum extent possible under law Once the software has been installed the LogWorks software LM Programmer and MTX L manual can then be located by navigating through Start gt Programs gt LogWorks3 3 2 Connecting to LM Programmer LM Programmer is used to update firmware change fuel types set display ranges and program the two analog outputs 1 Connect the OUT port of the MTX L to the provided serial programming cable Connect the other end of the serial programming cable to your computer If your computer does not have a serial port you can purchase a USB to Serial adapter MTX L_Manual doc from Innovate Motorsports P N 3733 or use any USB to serial adaptor that includes drivers Make sure that nothing is connected to the IN port of the MTX L 2 Power up the MTX L 3 Launch LM Programmer The LM Programmer application can be launched from Start gt Programs gt LogWorks3 gt LM Programmer from the Windows task bar 3 2 1 Analog Outputs _ Connect the MTX L to the computer and launch LM Programmer 2 Select one of the Analog output tabs The Analog output page looks like this LM Programmer Version 3 28 i ll xl Info Display Analog Out 1 Analog Out 2 Output 5 01V
7. the bung the sensor hexagon should not exceed 500 C or 900 F If these temperatures are exceeded in your application you should install the Innovate Motorsports Heat Sink Bung extender P N 3729 HBX 1 A It is NOT a good idea to do a sensor prewarm up prior to starting the engine Depending on the climate and the sensor position in the exhaust condensation can form in the exhaust pipes This condensation could then be blown by the exhaust stream against the hot sensor when the car is started The resulting heat shock can permanently damage the sensor 2 4 Sensor Calibration Once the unit has been wired and a suitable location has been found for both the gauge and the sensor it is time to do the sensor calibration Innovate Motorsports Direct Digital wideband measurement principal allows you to calibrate the sensor to compensate for sensor wear This procedure takes just a few moments and it will insure the most accurate readings throughout the oxygen sensor s life This procedure is required anytime a NEW oxygen sensor is installed The calibration procedure requires that the oxygen sensor be in free air not in the exhaust Important Just because a vehicle is not running does not mean that the exhaust system is free of gases 1 With the sensor disconnected apply power to the MTX L When power is applied all three digits will light up and the needle bar will sweep once through all LEDs Then the status light will turn red a
8. FR from Lambda this device a unique name air fuel ratio pounds of air pound of fuel Max 8 characters 14 7 Gasoline nd MTXI Reset Calibration 3 2 4 Customizing your display range 2 LM Programmer Version 3 29 The MTX L gauge can be setup to fore display different from both th rr isplay different ranges from both the G C Lambda D e Needle Bar and the Numeric Display Needle Bar There is also an option to display Gee G Va Ra te lambda or AFR Lastly the gauge can po o faz bi PS be setup to display percentage of Oxygen once the readings go beyond 7 lambda 11 MTX L_Manual doc 3 2 5 _ Updating the firmware Connect the MTX L to the computer and launch LM Programmer Once connected LM Programmer will display the current version of the firmware that is installed in the MTX L Do not update the firmware if the versions are the same A firmware update should only be necessary if there has been a new release On the very first tab of LM Programmer you will see a button labeled Update Firmware click this button Select the firmware file with the did extension The latest firmware file will be available for download from the Support section of the Innovate Motorsports web site The software will now prompt you to confirm that you wish to overwrite the firmware currently on your MTX L Click OK DO NOT power off or disconnect the MTX
9. L from the computer until the firmware progress screen completely disappears Once finished you may disconnect the unit from the computer and exit out of the software 3 3 Logging data from your MTX L with LogWorks 1 2 3 4 Connect the OUT port of the MTX L to the provided serial programming cable Connect the other end of the serial programming cable to your computer If your computer does not have a serial port you can purchase a USB to Serial adapter from Innovate Motorsports P N 3733 or use any USB to serial adaptor that includes drivers Make sure that nothing is connected to the IN port of the MTX L Power up the MTX L Launch LM Programmer The LM Programmer application can be launched from Start gt Programs gt LogWorks3 gt Logworks3 from the Windows task bar Once LogWorks launches go to File gt Connect You will be prompted to connect to serial COM port Click Connect To start recording go to File gt New Realtime Log or in the Toolbar click on the Tool 4 Wiring Analog Outputs The analog outputs on the MTX L are single ended That is each output uses just one wire It is assumed that the MTX L and the device it is being connected to are already sharing the same ground In a vehicle this is generally true but there can be small offsets in voltage when devices are grounded to say the chassis at different points You can minimize these offsets by sharing a good common ground point or you ca
10. MKS eccceceseeeeeeeeeeeeeeeeeseaeeesaaeeseeeeeseaeeesaeeeeeeeenaees 12 4 Wiring Rule ebe lee 12 5 Tips Tricks amp Troubleshooting ceeceeececeee cee ee eect eee eeae cece ee eecceeaaaeceeeeeeeeeesecaaeaeeeeeeeseseccaeaeeeeeeeeeeeed 13 ST Alr Fuelandi Lambda e eeri riran ATE EEE NINE ege nevada dha naii Ghia EEEE ANEKERE 13 5 2 General measurement regulrements nnanet 14 5 3 Vehicles with Smog PUMPS asesir eeni EEE E TINE EREKE SEAE ERRER ATERAT EEE AE EART 14 5 4 Single Cylinder Engines AA 14 B D Diesel ue UE 14 5 6 Connecting the MTX L to simulate a narrow band OXYGEN Sensor 15 Appendix A Specifications 0 2 0 0 ccccccecceceeceeeseeceeseeceeeeeceaeeeeaaaesaeeecaaeeceaaeseaaesaeeecaaesseaaessaneesneeeesaesseaaeesanees 17 Appendix B Limited Warranty AA 18 Appendix G Coppgeelorg seri iiser R iad avd edad eau ladda EE 19 Appendix E Error Codes and Troubleshooting Tips ccscceeeeeeceeeeeeeeeeeeeeeecaeeesaaeeeeneeseaeeesaeeesaaeesenees 20 2 MTX L_Manual doc 1 MTX L The MTX L is an integrated gauge and controller for wideband AFR lambda measurements Although it can be operated stand alone it has digital I O for integration with other MTS compatible products and two configurable analog outputs for integration with ECU s and 3 party data loggers The following views will help you get familiar with the unit Needle Bar wo ff Status Light A ge Za d KZ z k e V e 9
11. OR SUCH PRODUCT AND SHALL IN NO EVENT INCLUDE INCIDENTAL CONSEQUENTIAL SPECIAL OR INDIRECT DAMAGES OF ANY KIND EVEN IF INNOVATE IS AWARE OF THE POSSIBILITY OF SUCH DAMAGES Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you 18 MTX L_Manual doc Appendix C Connectors 1 Sensor Use IPUMP SENSE PUMP SHTR VBAT SENSE SHIELD GND SHTR VBAT 3 2 Power and Analog Cable 3 Serial Out Pin Use 1 RX 2 TX 3 GND 4 GND 4 Serial In Pin Use 1 TX 2 RX 3 GND 4 MTS Sense MTX L_Manual doc Appendix E Error Codes and Troubleshooting Tips Error Error Message Likely Root Cause Fix Code Error 1 Heater circuit 1 Short in cable 1 Repair replace cable shorted 2 Short in sensor 2 Replace sensor Error 2 Heater circuit 1 Damaged sensor cable 1 Inspect sensor cable for rips or tears open 2 Cable connector not fully seated 2 Verify Sensor is fully seated into 3 Sensor Damaged connector make sure it clicks 3 Replace Sensor Error 3 Pump cell circuit 1 Short in sensor cable 1 Repair sensor cable shorted 2 Short in sensor 2 Replace sensor 3 Sensor overheating 3 Move your sensor bung as far 4 EGT gt 1700 F downstream as possible OR add a heatsink to isolate the sensor from the pipe Error 4 Pump cell circui
12. a narrow band oxygen sensor It is possible to install the wide band sensor in place of the OEM oxygen sensor In this case the meter s analog output signal will replace the OEM oxygen sensor s signal to the fuel injection computer Note Please review your analog output settings the configuration for a narrowband is 1 1 V for an AFR of 14 and 1 V for an AFR of 15 EFI equipped cars typically incorporate a narrow band oxygen sensor These sensors are typically 1 2 3 or 4 wire sensors Some vehicles are equipped with oxygen sensors that do not produce an output voltage but change their resistance depending on exhaust gas content These sensors cannot be simulated They are used in less than 1 of all vehicles Refer to your vehicles specifications if you think that your vehicle may be in this category The same is true for vehicles already factory equipped with a wide band oxygen sensor These cannot be simulated either Some EF I computers will create a fault when the heater power wires of the oxygen sensor are disconnected In this case mount the old oxygen sensor in a safe place but not necessarily in the exhaust and connect the heater wires to it to keep the EFI computer happy A Be careful where you mount the stock sensor as heated sensors will get hot To connect the MTX L to the EFl computer first determine what kind of narrow band sensor is used then follow the instructions below you will need a digital multimeter to determine cor
13. auge should be done in such a manner that the cables are not being forcefully pulled from the gauge itself Route the sensor cable avoiding contact with the exhaust pipe and other hot sources that could melt the cable Also avoid routing the sensor cable near ignition components or other sources of RF radio frequency and EMI Electromagnetic interference noise The MTX L gauge is splash resistant not water proof and can be mounted so that it is exposed to the outdoor elements The MTX L should not be submerged and special consideration should be taken to protect the gauge from direct water spray water coming from a pressurized source When replacing the bezel and or gauge face verify that the o ring is properly seated 4 MTX L_Manual doc 2 3 Sensor Placement Your MTX L gauge kit includes a 1 bung This bung is supplied to best prolong the life of your sensor since it will allow the sensor to sit flush with the exhaust pipe Using a bung is the preferred method for mounting the O sensor for both catalytic and non catalytic cars On CATALYTIC CONVERTER equipped vehicles Install the oxygen sensor s bung upstream from the catalytic converter a bung is included in the MTX L kit The bung must be installed in the exhaust pipe at the side or on top NOT on the bottom of the exhaust pipe Any decent muffler or exhaust shop can do this for you The wide band oxygen sensor is then installed into the bung to take a reading The ideal po
14. ignite also pump unburned oxygen into the exhaust and cause the MTX L to measure lean 3 The only circumstance where the MTX L will measure richer than the engine is running is if the pressure in the exhaust tract is excessive and the engine is running on the rich side to begin with 5 3 Vehicles with smog pumps Older fuel injected vehicles with a smog pump actually inject air into the exhaust stream to aid their catalytic converter in the burn up of unburned or partially burned fuels This additional air will make the exhaust look leaner than the engine is running For an accurate measure install the MTX L sensor up stream of the outputs of the smog pump If this is not possible temporarily disable the smog pump by removing its drive belt 5 4 Single Cylinder Engines These kinds of engines are difficult to measure at the tail pipe using an Exhaust Clamp The oscillations of the exhaust gas are so large that a lot of outside air enters the exhaust and prevents correct measurement Sometimes it helps to temporarily wrap a piece of heat resistant cloth around the exhaust clamp to prevent outside air from entering the exhaust 5 5 Diesel Engines Diesel Engines and gas turbines run at wide open throttle at all times They do not have a throttle but regulate power by the amount of injected fuel The MTX L can still be used but measurements at idle will read as lean 14 MTX L_Manual doc 5 6 Connecting the MTX L to simulate
15. imwovaTe f pi AIR FUEL RATIO Numeric Display ounting Bracket erial Connectors 3 MTX L_Manual doc 2 Installation 2 1 Wiring The MTX L has 5 stripped wire ends 1 Connect the RED wire to a switched 12V source A switched 12V source goes on as soon as the ignition on the car is on Make sure the connection is fused with a minimum fuse size of 3A 2 Connect the BLACK wire to a ground source Avoid noisy ground sources such as grounds used for radio and or ignition sources 3 Connect the WHITE wire to a headlight power wire a wire that supplies current to the headlights This enables the display to dim for better nighttime viewing DO NOT CONNECT THIS WIRE TO THE HEADLIGHT DIMMING WIRE Connection to this rheostat type of switch will cause the gauge to malfunction If you chose not to utilize the dimming feature connect the WHITE wire to ground 4 Optionally the YELLOW Analog out 1 and or BROWN Analog out 2 can be connected to the analog inputs of other devices such as data loggers or ECUs If either one or both of these wires are not being used isolate and tape the wire s out of the way The default analog outputs are as follows Analog output one yellow is OV 7 35 AFR and 5V 22 39 AFR Analog output two brown is 1 1V 14 AFR and 1V 15 AFR This is a simulated narrowband signal 2 2 Mounting and Routing The MTX L gauge fits in any standard 2 1 16 52mm gauge pod Mounting of the g
16. l 9 0 CNG 17 2 Diesel 14 6 The measurement Lambda is the actual air fuel ratio over the stoichiometric ratio A Lambda measurement of 1 equates to the air fuel ratio of 14 7 for gasoline engines When Lambda is less than 1 the engine runs rich i e unburned fuel exists in the exhaust stream If lambda is greater than 1 the engine runs lean i e free oxygen 0 is present in the exhaust Depending on the engine maximum power is typically delivered when the engine runs slightly rich for example at lambda values of 0 8 to 0 9 for most engines This instrument provides a means to measure the actual air fuel ratio or lambda in the engine in operation directly from the exhaust For this a special wide band oxygen sensor is used to measure the lambda value derived from the oxygen content or lack thereof of the exhaust gases 13 MTX L_Manual doc 5 2 General measurement requirements The MTX L measures the air fuel ratio by measuring the amount of oxygen in the exhaust for lean conditions or the amount of unburned or partially burned fuel for rich conditions You should correct for the following in order to get optimum results from the MTX L 1 An exhaust leak will allow oxygen to enter the exhaust stream and therefore will measure leaner than the engine is actually running For correct measurement air leaks in the exhaust MUST be prevented under all circumstances 2 Missing ignitions where the air fuel mixture does not
17. n adjust for them by configuring the analog output voltages on the MTX L MTX L_Manual doc 5 Tips Tricks amp Troubleshooting 5 1 Air Fuel and Lambda The Stoichiometric AFR value is the AFR multiplier So for standard unblended gasoline its 14 7 If you set it to 14 7 the MTX L display will show 14 7 AFR for Lambda 1 0 If you set it to 6 4 methanol the MTX L will show 6 4 AFR for Lambda 1 0 You can look at Lambda as the percent of richness If running Lambda 0 85 12 5 AFR for gasoline you are running 15 rich For methanol 15 rich means 5 44 AFR That s where the value of Lambda comes in If you run blended fuels where you don t know the stoich value you look at Lambda and adjust to 10 20 rich depending where your max power is The value of richness required by an engine for max power does change relatively little fairly independent of fuel But if for example you adjust an engine running methanol to 12 5 AFR you would be running so lean that it would probably not even run The MTX L can be used to read Air Fuel Ratio AFR or Lambda for an engine For gasoline driven engines the theoretically optimal air fuel ratio for efficiency is 14 7 pounds of air for every pound of fuel At this ratio theoretically all available oxygen in the air combines with all available fuel This ratio is called the stoichiometric ratio Stoichiometric for different fuels are as follows Gasoline 14 7 LPG Propane 15 5 Methanol 6 4 Ethano
18. n AFR of 14 and 1 V for an AFR of 15 Other curves of course are easily programmable 3 2 2 Advanced output programming The Advanced button allows programming to set the analog out update speed and the voltage output during sensor Warm up and Error Condition The factory defaults of the analog outputs is to update the outputs 1 12 of a second The factory default voltage output is set for 0 volts for both the Warm up and Error Condition Advanced Analog Out Settings Response Speed C Instant 1412sec 1 6 sec 1 3 sec Warmup output Output at Error Cond 0 00 Yolt or 0 00 Volt or Pl High Impedance P High Impedance Factory defaults When setting the MTX L to the slower response speed settings the measured mixture data will be averaged over the response time setting before being output 10 MTX L_Manual doc 3 2 3 Customizing your fuel type The MTX L gauge comes pre programmed to display AFR in the gasoline scale By connecting the gauge to LM Programmer fuel type settings for different fuels can be setup This setting can be found on the lower right hand corner of the Info tab in LM Programmer L LM Programmer Version 3 28 151 x Info Display Analog Out 1 Analog Out 2 2003 2010 innovate Technology inc NNOVATE MOTORSPORT S Device Type MTX L Firmware Version 1 00c Connected to port COM 32 Processor Version ATM64 16 Please give Multiplier to calculate A
19. n after 3 month of use Thereafter calibrate twice a year or every 10 000 miles whichever comes first Race Application Calibrate before first installation of new sensor Calibrate once per race weekend Dyno use Calibrate a new sensor Calibrate every 2 3 days depending on usage 2 5 Changing the MTX L s gauge face and or bezel 1 Lay the MTX L face down and remove the three 2 phillips screws from the outside rim of the back plate 2 Carefully lift out the bezel from the gauge cup 3 Configure the gauge as desired by changing the gauge face and or bezel 7 MTX L_Manual doc Be sure to remove protective film from the gauge face This can be done easily with a piece of scotch tape 4 Make sure every piece is positioned correctly using the locating tab and reassemble the gauge 5 Reinstall the 3 2 phillips screws 3 Software LogWorks 3 and LM Programmer 3 1 Installing software 1 2 Install the CD that came with your MTX L on your Windows based personal computer The installer will automatically start follow the prompts to install the software LogWorks 3 Installation xj Welcome Le Welcome to the Logworks3 Setup program This program wil instal P r LogWorks3 on your computes It is strongly recommended that you exit all other Windows programs before running this Setup program Dk cancel to exit Setup and close any programs you have running Click Nest to continue with the Setup program Waning
20. nd the numeric display will read E2 This is an error code indicating that no sensor is detected Leave unit powered on for minimum 30 seconds 6 MTX L_Manual doc 2 Power down the MTX L and attach the oxygen sensor using the cable provided Again make sure that the sensor is in free air not in the exhaust 3 Power up the MTX L Again the display should sweep but instead of an error the display will display Htr This indicates that the sensor is being heated up to operating temperature After 30 60 seconds the display will switch from Htr to CAL indicating that the sensor is being calibrated A few seconds later your MTX L will begin displaying AFR Since the sensor is in free air the gauge will default to the upper limit of 22 4 The calibration procedure has completed and the system is now ready for use Important You can disconnect and reconnect the sensor and sensor cable for installation without losing your calibration However if you power up the MTX L without a sensor connected your calibration will be reset See step 1 above 2 4 1 Calibration Schedule Normally aspirated daily driver Calibrate before installation of new sensor Calibrate new sensor again after 3 month of use Thereafter calibrate once a year or every 20 000 miles whichever comes first Turbo Application daily driver tuned rich Calibrate before installation of new sensor Calibrate new sensor agai
21. rect OEM sensor wires a Vehicle has a 1 wire sensor Wire analog output 1 directly to the wire b Vehicle has a 2 wire sensor While the engine is off determine which of the 2 wires has a low resistance between the wire and the sensor body This is the heater power for the sensor Wire analog output 1 directly to the other wire Leave the heater power wire unconnected but make sure it cannot ground itself c Vehicle has a 3 wire sensor Typically the 3 wires are heater power Ground and sensor element connection Generally they have 1 black wire and 2 white wires Connect the black wire from the EFI computer to analog output 1 of the meter Leave the other wires unconnected but make sure they cannot contact any metal parts or see above If the wiring colors are different then heater power can simply be determined by measuring the voltage on the wires when the engine is running The wire showing 12V or more is the heater power The sensor element connection voltage fluctuates around 0 45V when the car is warmed up 15 MTX L_Manual doc Wire analog output 1 directly to this wire The Ground connection has low resistance to chassis ground less than 1 Ohm Measure while the engine is off d Vehicle has a 4 wire sensor Typically the 4 wires are heater power heater ground sensor ground and sensor element connection Proceed as for the 3 wire sensor 16 MTX L_Manual doc Appendix A Specifications Power Power requirements
22. sition is between 10 00 and 2 00 position On NON CATALYTIC converter vehicles You have the option with non catalytic cars to also use an exhaust clamp as described below Use of a bung is the preferred method for mounting the 0 sensor for both catalytic and non catalytic cars On TURBO CHARGED vehicles Install the bung downstream from the turbo but before the catalytic converter The high exhaust pressure before the turbo interferes with the lambda measurement and the high exhaust temperatures encountered there can damage the sensor Alternatively you can also use the optional exhaust clamp part number 3728 to sample exhaust gases at the end of the tail pipe A Do NOT install the Bung below the 3 o clock or 9 o clock position Condensation can form in the exhaust pipe and permanently damage the sensor 6 o clock is the absolute worst position to mount the sensor 5 MTX L_Manual doc A Wide band oxygen sensors like the one shipped with the MTX L are designed to work with unleaded gasoline Use with leaded gasoline will significantly reduce the lifespan of the sensor The reduction is directly proportional to the metal content of the fuel and the tune of the engine A WHEN INSTALLED IN THE EXHAUST THE OXYGEN SENSOR MUST BE CONNECTED AND OPERATING WITH THE MTX L WHENEVER THE CAR IS RUNNING AN UN POWERED OXYGEN SENSOR WILL BE DAMAGED WHEN EXPOSED TO EXHAUST GAS IF NOT PROPERLY POWERED A The maximum temperature of the sensor at
23. t 1 Damaged sensor cable 1 Inspect Sensor cable for rips or tears open 2 Cable connector not fully Verify Sensor is fully seated into seated connector make sure it clicks 3 Sensor Damaged 3 Replace Sensor Error 5 Reference cell 1 Short in sensor cable 1 Inspect sensor cable for rips or tears circuit shorted 2 Short in sensor Replace sensor Error 6 Reference cell 1 Cable connector not fully 1 Verify Sensor is fully seated into circuit open seated connector make sure it clicks 2 Damaged sensor cable 2 Inspect sensor cable for rips or tears 3 Damaged Sensor 3 Replace sensor Error 7 General System Software error Reboot MTX L by cycling power error typically a Reload firmware if necessary software error Error 8 Sensor Timing 1 Sensor overheating 1 a Perform sensor heater error typically a The Bosch LSU4 2 is rated to recalibration b Move your sensor damaged operate at a sensor housing bung as far downstream as possible sensor temperature of lt 900 degrees Right before the cat or 2 3 feet from the measured at the bung for end of the tailpipe are good locations c maximum accuracy and control Add a heatsink to isolate the sensor When this operating temperature from the pipe The HBX 1 is an range is exceeded the sensor can available accessory no longer be accurately 2 Replace sensor controlled 3 Correct Tune and recalibrate the 2 Sensor is damaged sensor 3 Overly Rich condition Error 9
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