Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI (LS1) System Hardware & BigComm Software - Manual (Page 68)

BigStuff3 Pro SEFI System (LS1)
Version 1.0 67
38. After Start Decay
The After Start Correction fuel being added by the ECU during an engine starting routine is
only required for a very short period of time. The ECU pulls the fuel back out, or decays it, as a
function of crankshaft interrupts and coolant temperature. The ECU decays the After Start
Correction Fuel over the number of interrupts, depending on the temperature the engine is
currently operating at, defined in the After Start Decay table. The decay period mentioned here
is very, very short. The table below shows 8 interrupts were used at –14
o
and 22 interrupts at
230
o
.
While the engine is running, a “real-time Ellipse” will move within the After Start Decay table
relative to the current engine coolant temperature “operating point”. Use it as a point of
reference to help calibrate the After Start Decay table.
To change a value in the After Start Decay 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.