BigStuff3 - GEN3 Engine Torque Management (ETM
Contents
1. BigStuff3 GEN3 Engine Torque Management ETM System Rev 1 1 Table of Contents po Section Page peine 1 The System Description 1 System Description 2 What is Included 1 What the System Includes _ 3 WhatElseisNeeded 2 What Else is Needed OL 4 How to Install the ETM System c 2 How to Install the ETM System How to Configure the ETM System Desired Driveshaft Speed Table Drive Shaft Error Table 6 Driveshaft Error Table OOS Torque Parameters o Steps to Launching the Car 8 Torque Control How to Use the ETM System The Initial Calibration Interpreting Replay Graphs Ka cz R 6 o Misfire Configuration 6 Mistire Configuration sae 6 Torque Como brat a a System Description The GEN3 s ETM system works to control drive shaft speed for an eight 8 second time period using a patent pending 32 level torque management control strategy What the System Includes and its Capabilities e An Engine Torque Management Module not included not required with GEN3 coil on plug systems e The ETM Harness e Imbedded control software to control engine torque e The following user defined system control and configuration tables located in the main tool bar under Torque Management e A Three Shooter timing retard control system This feature helps control engine torque during the critical period2. Miz ire OF When 2 Step turns off Timer Enable turns on Torgrd3 g 12 MisfreCtr 0 Torque Reduction occurrin 8 Twa iep Cn Time 3 92sec Viewing Replay 13 Rev 1 1
3. 6300 6400 4 60 490 500 510 520 5 30 540 550 560 570 560 590 600 610 620 6 30 seconds Time scale ending at 7 9 6500 6600 6700 6800 6900 7000 7100 7200 7300 7400 7500 7600 7700 7800 7900 8000 seconds 640 650 660 670 680 690 7 00 710 7 20 7 30 7 40 750 760 7 70 780 7 90 Time sec Act Drv Shaft 0 RPM Prj Drv Shaft 0 RPM Idle Delta 224rpm Fuel Press 0 psi Once the desired driveshaft speed is defined the GEN3 ETM system uses a patent pending 32 level torque management control strategy to ensure the actual driveshaft speed follows the desired driveshaft curve A Torque Reduction Stage of thirty one 31 means that all the cylinders are firing A Torque Reduction Stage of zero 0 means none of the cylinders are firing The difference between the actual and desired drive shaft speed is called Driveshaft Error A Drive Shaft Error table is also used to define the level of control applied as a function of driveshaft error The GEN3 ECU has an eight 8 cell Driveshaft Error table for the user to define the torque reduction stage needed for different degrees of drive shaft error For example if the GEN3 ECU determines from sensors used in the system that the driveshaft error is 800 rpm the ECU will apply a very aggressive torque reduction stage lets say a level nine 9 The driveshaft RPM error range in the table goes from zero 0 RPM error to 896 RPM error Each cell covers 128 RP
4. Desired Driveshaft Speed curve is determined It is best to verify this with a Replay first before activating it 7 Rev 1 1 LA In am EE Offline C Program FilesBigStuffBigComm L 1 E85 big y Torque Parameters Staged Timing Retard 1st Stage 2nd Stage 3d Stage 4th Stage Sth Stage Eth Stage 7th Stage sth Stage Sth Stage 10th Stage 11th Stage 12th Stage Retard ML Deg Retard 0 00 Deg Retard 0 00 Deg Retard 0 00 Deg Retard 0 00 Deg Retard 0 00 Dea Retard 63 75 Deg Retard 63 75 Deg Retard 63 75 Deg Retard 63 75 Deg Retard 21 25 Deg Retard 2 50 Deg Delay 0 0 sec Delay 0 0 sec Delay 0 0 sec Delay 0 0 is Delay 0 0 Delay joo 3 Delay 25 5 f Delay 25 5 sec Delay 25 5 sec Delay 25 5 sec Delay 25 5 sec 10 x The staged timing input section of this table is for the optional six or twelve shooter systems only Delay 25 5 sec 0 to 600 M Misfire Configuration Max of Misfires 20 Torque Control 4 gt Checking this box Torque Control Enable OK Cancel activates the Traction Control system Rev 1 1 Steps to Launching the Gar with the 2 amp 3 Step ETM After the burn out flip on the DAE DLTRIGR switch requires 12V to activate used for the GEN3 s data acquisition system 12 Volts must be applied to this wire the DAE DLTRIGR switch must be turned on for the 2 step amp 3 step to work Go to
5. page 3 in this manual for more details If you already have the DAE option use it as usual If you do not have the DAE option use the DAE trigger wire that is supplied with the ETM upgrade kit see photo above Apply foot brake and press the throttle At 25 TPS required to activate and 250 RPM below the value inputted into the 2 Step RPM Lo input box in the BigComm Operating Parameter Configuration Table the rev limiter will begin to operate If the first 2 step doesn t come on make sure the ETM chip module is installed in the MSD ignition box correctly There is a red LED in the ETM module that will illuminate if it is installed properly The first 2 step wire runs from the ECU header 1 pin B2 Requires 12V to activate 12 Volts must be applied to the 2 step Enable wire and the DAE Trigger wire for the 2 step to work Go to page 3 in this manual for more details Creep the car forward into the staging beams and bring the second bulb on Depress the trans brake button This will activate the second 2 step A K A 3 Step Again at 25 TPS required to activate and 250 RPM below the value inputted into the 2 Step RPM Hi input box in the BigComm Operating Parameter Configuration Table the 3 Step rev limiter will begin to operate 12 Volts must be applied to the 2 step Enable wire and the DAE Trigger wire for the 2 step to work Go to page 3 in this manual for more de
6. 2 step o Connect the 3 Step Enable wire Hdr 2 W1 TSS to the trans brake switch If you have this option If you have the DAE option the red turbo shaft speed wire in the DAE harness also Hdr 2 W1 is used for the 3 step enable function 12 Volts must be applied to this wire via the trans brake for example for the 3 step to work Also there must be 12 Volts applied to the DAE trigger wire for the 2 step and 3 step functions to work When 12 Volts is applied to the 3 step Enable wire the 3 step will override the 2 step o Timer Enable wire connect to a relay to invert the trans brake signal see wiring diagram below This wire must havel2 Volts applied to it once the trans brake is released to start the timers in the ECU 4 Rev 1 1 Trans brake Logic Inverter Relay Wiring Use a Bosch style 30 Amp relay part number 0332201107 Wire as follows Pin 1 Ground Pin 2 Trans brake signal Pin 3 12V Pin 4 Timer Enable Hdr 1 Pin L2 or 4 way Boost connector pin A Relay Trans Brake Signal D Timer Enable Q oOo Ground RER 12V How to Configure the ETM System The ETM Torque Management configuration screens can be accessed from BigComm s main tool bar as shown below ESC EE m izj k Spot le Traced Pol de Alle beh Opel Gao Ged Ware Poe Gee Trance Bee ee
7. between the vehicle launch through the one two gear shift Note May not be implemented in all firmware A six shooter and twelve shooter retard system is available as an option Call BigStuff3 for details e An integrated two step and optional three step rev limit controller The system never misfires the same cylinder two times consecutively resulting in more uniform EGT s and higher boost while staging e Extended Data Acquisition Replay parameters described in more detail below to capture the following events o A Misfire Flag to indicate where in time the ETM system was active MisFire o A Misfire Counter to count the total number of mis fire events during the eight 8 second run MisfireCtr o Torque Reduction Stage indicator TorqRdStg o TISS Speed Displays the desired driveshaft RPM o TOSS Speed Displays the actual driveshaft RPM Note With the ETM functionality the Replay Mode is now Extended Mode which means there are an additional 12 variables flags that are now part of the Replay for the traction control 2 Rev 1 1 What Else is Needed If using a MSD8 CD ignition box a pullup resistor needs to be installed between the ignition 12V post and Mag post on the side of the MSD8 ignition box A minimum of a 900 Ohm min to 1K max 125 Watt min to 2 Watt max resistor is needed BigStuff3 s ETM system requires but does not include provisions for sensing driveshaft speed I
8. linge Bei Coder PE Wren ke Desked Drisht b 9 Be ai Ze mr Torque Por fri 5 Rev 1 1 A user defined driveshaft speed is inputted into the GEN3 s Desired Driveshaft Table The eight second 8 time period is broken up into 80 cells each representing 1 10 of a second In each of the eighty 80 cells the user can define the desired drive shaft speed The desired driveshaft curve should be 100 200 RPM above the best driveshaft curve possible All the usual editing features are employed Fill Interpolate etc in the table as well but only a row at a time Remember to hit the Enter key to guarantee the change takes place if changing the cells independently CT a User defined desired driveshaft speed is inputted for each time period eighty 80 periods in total K Desired Driveshaft Table Driveshaft rpm 200 300 400 500 550 650 750 650 950 1050 1150 1250 1300 1400 1500 7600 Time 0 00 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 1 00 1 10 1 20 1 30 1 40 1 50 scale starting 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 13000 3100 3200 a Zero 1 60 1 70 1 80 190 200 2 10 220 230 240 250 260 270 280 290 3 00 3 10 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 3 20 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 4900 5000 5100 5200 5300 5400 5500 5600 5700 5800 5900 6000 6100 6200
9. 2 MSD 6AL o MSD Mag44 points box O Note The ETM system for BigStuff3 s GEN3 coil on plug systems COP does not require the ETM module since all the necessary ETM hardware is resident in the GEN3 ECU e The ETM Harness Header connector goes to GEN3 Header marked ETM 3 Step Enable wire 4 2 way drive shaft speed sensor oven connector fr DAE trigger wire o Connect the harness header connector into the GEN3 module header connector marked ETM o Connect the two way connector labeled Drive Shaft to the drive shaft speed sensor not supplied with the system See the What else is Needed section above for more details Install the 2 way Metri Pack Packard connector PN 12103784 w terminals PN 12089188 onto the driveshaft sensor and plug it into the ETM harness If the TOSS trace 1s erratic switch the wires o Connect the Ground wire to the frame near the drive shaft speed sensor along with the sensor ground o Connect the DAE trigger Wire from ECU header connector Hdr2 Y2 to a 12V switched source There must be 12 Volts applied to this wire for the 2 step and 3 step functions to work o Connect the 2 Step Enable wire Hdr1 B2 to the footbrake and or trans brake depending upon options The 2 step and 3 step functions are independent of each other except that when the 3 step is engaged 12 Volts applied to the 3 step Enable wire the 3 step will override the
10. M of driveshaft error A linear interpolation is used between rpm cells The GEN3 data acquisition Replay system will provide a graph of the amount of torque management using the variable called TorqRdStg 6 Rev 1 1 Be mmm Torque Reduction Stage nine 9 means the GEN3 ECU will apply a very aggressive timing control strategy in an attempt to bring the actual drive shaft speed in line with the user defined desired driveshaft speed Note that the drive shaft Driveshaft Error Table error equals 896 RPM Torque Reduction 912 640 Drivershaft RPM Error A Torque Reduction Stage of twenty eight 28 means the GEN3 ECU will apply a minimally aggressive timing control strategy in an attempt Driveshaft RPM Error is to bring the actual drive shaft speed in line with defined as the difference the user defined desired driveshaft speed error between the desired Note that the drive shaft error equals only driveshaft speed TISS and 128 RPM actual drive shaft speed TOSS Act Drv Shaft 0 RPM Pr Drv Shaft 0 RPM Idle Delta 224rpm Fuel Press 0 psi Misfire Configuration The TC Parameters table allows the user to define the maximum number of misfire events during the eight 8 second run Note Currently not used Torque Control enable disable Traction Enable When this box is checked the torque management system is activated It is advised not to enable this until a good
11. f you purchased the GEN3 system with transmission control for the GM 4L60E or 4L80E automatic transmissions a driveshaft speed sensor is not required For all other applications provisions for detecting the driveshaft speed will need to be made BigStuff3 offers a driveshaft speed sensor assembly under part number JMI 007 014 see photo below or you can use MSD PN 8159 In addition to the driveshaft speed sensor a pick up wheel and sensor mounting bracket are required BigStuff3 suggests using Mark Williams four 4 magnetic driveshaft ring Link http www markwilliams com driveshaftPickups aspx CategoryID 266 Note Make sure all of the magnets in the magnetic ring are all installed in the SAME direction A 0 100 air gap between the sensor and magnetic ring is recommended A sensor mounting bracket will need to be purchased or fabricated to mount the sensor You ll also need the 2 way Metric Pack connector Packard 12103784 w terminal PN 12089188 How to Install the System This module plugs into the MSD ignition modules where the rev limit chips plug in The red LED will illuminate if installed correctly e The Bigstuff3 ETM module plugs into the following MSD ignition modules where the rev limit chips plug in Note These are the only MSD ignition systems supported to date by BS3 This connector plugs into the connector in the main BigStuff3 wire harness labeled GM HEP o MSD8 o MSD 7AL
12. me 5 90sec Viewing Replay FEE ii 10 Rev 1 1 ETM or misfire control is on onl bd since TOSS is greater than P TISS TOSS rpm 4976 sr A oo A A TTN pair un i Time 5 94sec Viewing Replay Actual TOSS speed is above desired TISS curve TOSS is exceeding TISS A K A driveshaft error so misfire is enabled and active Desired TISS speed curve Time 6 825ec Viewing Replay 11 Rev 1 1 Ul ee PUR TT A Y 2 nf PON pA WN ond x A al fi NA AL J it zi L Time 4 645ec Viewing Replay og 1 00 l AANA A vA re in M A A J na Mad A AM Le OA rip A LE M w Lg vu uw we Wi PJ mt J b Time 4 40sec Viewing Replay B KACE E sus i i a RS mmm g TOSS_rpm Ea TorgRastg ETM misfire is off since TOSS is below the user inputted TISS value aaia TEAC tenets il TISS_rpm af Sa M A y A 1 A AA Misfire counter starts at zero but increments every time a cylinder is misfired 12 Rev 1 1 DRAIN OKAN AL EE TOSS rpm 5634 A total of 47 misfire events occurred during the five 5 ETM events recorded a Wi A amp FA SA A AJ PUS Nan fs SP WAN Be a V APE y i Time 6 52sec viewing Replay The Two Step flag displays the state of either or both the 2 step and 3 step inputs in the Replay screen E p AT lleresh Tons TESE lag 0 TES rpm 0 rr Cnab e OF
13. tails Once the trans brake clutch is released the Timer Enable pin Header 1 L2 must go high it requires 12V to activate The Timer Enable wire must be connected to a relay to invert the trans brake signal see wiring shown earlier When the tans brake is released the timers begin to run The boost stages and retards become active as well as the TISS projected driveshaft soeed curve See page 4 of this manual for information on how to invert the trans brake signal The Timer Enable wire does not need to be hooked up and active for the 2 step and 3 step to work but the staged boost control will not function without 12V to the Timer Enable wire 9 Rev 1 1 The Initial Calibration READ BEFORE USING THE SYSTEM e Make sure the driveshaft speed sensor is installed and functioning correctly e Disable the Torque Management system w ETM _Disable Make sure the box titled Torque Control Enable in the Torque Parameters table is not checked See Torque Parameters screen print above e Following the How to Use the ETM System procedure directly above collect data from a pass e Inthe Desired_Driveshaft_Table input desired driveshaft speed values 200 RPM greater than the actual driveshaft speed data collected in the initial pass Interpreting ETM Replay Graphs BED tem Timer enable on starts the timers User inputted TISS curve Actual driveshaft speed or TOSS value Ti
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