Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI (LS1) System Hardware & BigComm Software - Manual (Page 92)

BigStuff3 Pro SEFI System (LS1)
Version 1.0 91
the Timer Enable pin, which is Pin A of the 4-way Boost connector on the main wire harness
Boost_Connector_Pin_Out . A clutch switch or trans brake button should be wired between the
timer enable pin and a 12-volt source. A toggle switch can be added between the 12V source
and the clutch switch or transmission brake button to allow the timer enable pin to be turned on
and off.
In the example table above, Stage 2 will be activated two (2) seconds after “time zero” and Stage
3 will be activated three seconds after time zero.
Note: Once the stages are turned on, they stay on until the TPS and/or RPM criteria is no longer
true or the Timer Enable goes low/off.
Boost Spark Tables 1, 2 & 3
The Boost spark tables allow the user to set the spark retard (degrees) timing as a function of
RPM for each stage. The retard timing for each stage is not additive. In other words, when the
second stage comes on it replaces the timing values of the first stage and when the third stage
comes on it replaces the timing values of the first and second stage.
To change a value in the Stage 1 Boost Spark table, move the cursor using the PC’s mouse or
arrow keys to the cell to be changed. Input the desired value and hit “Enter” to save the change.
64. Start (Starting) Line Timing
The GEN3’s Starting Line Timing feature allows the engine to build boost at the starting line.
The feature is primarily focused at stick shift cars, but works equally well with automatic cars.
The Starting Line Timing feature can be used in conjunction with the 2-Step to maximize
starting line performance!