Precision Turbo and Engine BigStuff3 GEN3 1st Gear Spark Retard with Traction Control System (SR2) User Manual
Page 8

Rev 1.0
8
The screen below will open. Only the sections of the “Boost Parameters” table, enclosed with a yellow ring 
below, are applicable with the SR
2
system. Each section will be discussed in the paragraphs below. Under
“Spark Retard Mode”, select “1
st
Gear (RPM)”.
 
 
Note: The three “Boost Spark Retard Tables “are not functional with the SR
2
system.
 
Next, go back to the main tool bar and select “Boost”. In the drop down select “Gear 1 RPM Axis Config” 
as shown below. 
 
 
Configure the 1
st
Gear Retard system, which has a dedicated RPM table. This table will be the basis for the
amount of timing retard that will be applied, as a function of RPM, before the 1
st
Gear retard “times-out”.
The RPM values entered into the “1
st
gear RPM Axis Config” table will become the X axis of the table
When using the SR
2
system, make sure the 
“Minimum RPM” in 
the Boost Parameters 
section is set 500 RPM 
below your 2 Step RPM 
Hi (3-Step) RPM 
setting under 
Configuration/Operating 
Configuration from the 
main BigComm toolbar 
Make sure the Minimum 
RPM & TPS values are 
exceeded while the trans-
brake is on or the clutch is 
depressed. 
