Precision Turbo and Engine BigStuff3 GEN3 Powertrain Controller Ignition Setup Tutorial - Manual (Page 30)

Use a timing light to confirm that the value inputted into the “Crank Reference” (in the COP window,
not the Crank Trigger window) exactly matches the value at the crankshaft. The spark advance value
displayed in the “Dash” window (see below) must match the value shown on the crank dampener. If
they do not match, change the value (move the number up or down) in the “Crank Reference” window
until the value in the “Dash” window matches the crank dampener value exactly.
“Dash” Window
Dash Test Timing Feature
Bigstuff3 has also added a “Static Test Timing” feature that allows the end user to enter a value to
adjust the “Crank Reference” quickly. It is located in the Operating Configuration next to the “Crank
Reference” parameters (see below). Using this feature eliminates the need to enter a fixed value(s) into
the timing map. Usually the “Test Timing” calibration value is set to 30
o
. The enable button, directly
below the calibration value, must be checked to invoke this feature. Once enabled, the user can adjust
the “Crank Reference” value up or down to ensure that the “Dash” spark advance value (Spk_Adv in
the Dash) equals 30
o
at the crankshaft (on the dampener). A timing light must be used to verify this.
This feature can also be enabled as a quick way to verify the rotor phase at peak horsepower timing.
Enter the timing value for peak horsepower instead of the suggested 30
o
.
Note: Do not forget to uncheck the Static Test Timing box once the test is complete, although the
“Test Timing” value is invalid once the TPS exceeds the Clear Flood TPS for safety reasons (in case
you forget to disable it), and during cranking.
29