Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software - Manual (Page 79)

BigStuff3 Pro SEFI System
Version 2.1 – February 2011 72
To change a value in the After Start Correction 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.
38. AfterStart 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.
AfterStart Parameters