j9fd3s

so i put the wideband on the 91 yesterday, intake, cat back, other than that its 100% stock



stock, it was about 12.2ish@4500rpms, gradually dropping to 11.8@6500, which is the shift point for the a/t, i figure the duty cycle is around 80%.



i leaned it out 6%, pretty much across the board, its now in the upper mid 12's @4k, dropping to about 12.2@6500



seat of the pants says it pulls a little harder from 4500-6500...

KompressorLOgic

is this a NA car?? the stock ecu limits duty cycle to about 65%, and on a NA it doesnt run close to that high either... but the NA do run pretty rich stock...



what are u using a safc??

j9fd3s

i dont know what duty cycle actually is, but from the ITS car i have a pretty fair idea of what the bsfc and hp is/are, and thats how i'm coming up with those numbers. educated guess though



i'm using an f-con+gcc, its eventually going turbo

KompressorLOgic

you know i have a FCON layin around, ( used to use it, ran a **** load of boost on stock injectors and it held for quite a while was a really high milage t2 block )





but ive allways wondered how far up the FCON can increase the duty cycle, can it go beyond the stock 65% limit on the stock ecu???

j9fd3s

fcon appears to take the injector duty cycle and modify it. 0 is 0, 1-9 modify the fuel curve in .5 afr increments (give or take, kinda depends on mods...), i think the fcon can go to 100% it drives the injectors directly. you can, or could get the chips custom burned, or get the GCC and change the curve a little