I am still tuning my turboed OHV. my boyfriend knows his way around HPT very well but im still learning. I was just wondering if you guys had any insight on what was happening to my car. Im running cobalt ss injectors which are 36lb's... when i have the injector constant assigned with those my car stalls out real easy, like going into neutral at any point like 20-30-40 mph, down shifting caused it /putting the clutch in... etc. i was reading over my log file when it did it and i noticed that as soon as i saw it was going to stall out my injector duty cycle was at like 1% and lower... even at like 3k RPMs. even accelerating sometimes it would do it and it even did it at WOT once... I changed the injector constant so it thinks it has 34lb's in there and its been fine. have yet to look at my log file. im assuming it might be fuel pressure causing it since those injectors may be rated for a different fuel pressure than my cars putting out so at those times it just wasnt giving me the fuel i needed...? As im still running the stock fuel pump.

good question, sounds like a common problem. cause is probably going lean. only happens when warm, not when cold right?

adjusting the ve tables a little richer helps (around the 900-1100 rpm range at maximum vac) , but it makes cold startups rich (AFR in the 10's)

i raised the idle on my car to 1000 (5 speed) and it stalls a lot less.


14.82 @ 97 mph

it actually happened more so when my car was cold. once it warmed up it would be better. now its fine all the time changing the injector constant seemed to fix it. i dont think changing the idle would help because if i popped it into neutral at say 3k, itd stall... my injector duty cycle was like .60 so i think it just wasnt giving fuel.