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ZL1Killa
August 5th, 2006, 04:12 PM
I have a 2001 bolt on only so far trans am ws6, external bolt ons (intake, bellow, headers...etc) and i upgraded my fuel pump to a racetronix PnP kit and I"m upgrading my fuel injectors to the motron 60#ers

installed them and did the IFR according to the excel sheet, and at idle it was rich as hell.
fiddled with the injector timing, timing trim, offset(voltage pulse width adjustment) and other tables and got the ms reading from the injector to go from 1.9 to 1.6 and got my AFR from 11.x to 16.x(upper) and i'm trying to play with it to get it at idle (also with the A/C on) to stay at 14.6

anyone know anything?
my car still also has the stock cam. tuning the IFR apparently isn't the only thing i need to change
TAQuickness
August 5th, 2006, 10:09 PM
where were you before the injector upgrade? If you tune was spot on, and you followed the, IFR, Idle, VE, MAF, Spark, PE methodology, then the only thing you would be tuning for is injectors and should be handled by by the IFR and/or IOS table. The goal of tuning injectors is not to get your tune spot on, but to get you back to where you started with a lower IDC.
ZL1Killa
August 5th, 2006, 11:24 PM
my tune before was within + - 3~4 on the LTFT's

the problem i think is at idle that the car wants to command such a small pulse width at idle due to the injectors being so large and the car not needing much fuel at all at idle.
ZL1Killa
August 5th, 2006, 11:26 PM
i know for a fact its got something to due with the injector timing tables....
there is 1 table that affects the pulse width of the injector directly (at least more than the others) and thats the one i need to add like .1 to at a time to get the AFR down to around 14.x

does someone know if its the injector timing? i think it is...but i know there are the other tables that affect it and add to it
ZL1Killa
August 5th, 2006, 11:29 PM
cuz as soon as i got the injector from 1.9ms at idle to 1.6 it leaned it out. i'm talking about the injector base pulse width (ms) for bank 1 and 2

so thats what i need to play with.
TAQuickness
August 5th, 2006, 11:35 PM
Yup. Still haven't had my coffee. there is a minimum pulse width parameter you may want to play with. This will allow (or not) the PCM to command the small pulse width required with the larger injectors.
ZL1Killa
August 6th, 2006, 12:58 AM
lol, yeh man, morning.
right now its sitting at .59 on the default min inj pulse width and.59 in the min inj puls width
it was 1.08 on both

i'm doing it in OL
ZL1Killa
August 7th, 2006, 02:11 AM
forget OL.

CL... car is getting better