Precision Turbo and Engine BigStuff3 GEN3 Engine Torque Management (ETM) System - Manual (Page 2)

Table of Contents
Section Page(s) Hyperlink
1 The System Description 1 System_Description
2 What is Included 1 What_the_System_Includes
3 What Else is Needed 2 What_Else_is_Needed
4 How to Install the ETM System 2 How_to_Install_the_ETM_System
5 How to Configure the ETM System 4 How_to_Configure_the_ETM_System
6 -Desired Drive Shaft Speed Table 5 Desired_Driveshaft_Speed_Table
7 -Drive Shaft Error Table 6 Driveshaft_Error_Table
8 -Torque Parameters (Six-shooter) 6 Torque_Parameters
9 -Misfire Configuration 6 Misfire_Configuration
10 -Torque Control (enable/disable) 6 Torque_Control
11 Steps to Launching the Car 8 How_to_Use_the_ETM_System
12 The Initial Calibration 9 The_Initial_Calibration
13 Interpreting the Replay Graphs 9 - 12 Interpreting_Replay_Graphs
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
• An Engine Torque Management Module [not included (not required) with GEN3 coil-on-plug
systems].
• The ETM Harness.
• Imbedded control software to control engine torque.
• The following user defined, system control and configuration tables, located in the main tool bar
under “Torque Management”:
• A “Three-Shooter” timing retard control system. This feature helps control engine torque during
the critical period 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.
• 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.
• 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.
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