Does anyone know where I can find the definitions and effects of the cranking parameters for a GEN3 PCM? I have searched and searched and can find same for every other parameter except cranking.
Reason I ask is that I'm having an issue only with cranking. Sometimes engine starts instantly, other times difficult to start but if I stop cranking,shut key off and retry, it will start readily 99% of the time. The remaining 1% might require fiddling with the throttle to get it started but I can always get it started. Given that sometimes it starts instantly, I'd like it to start instantly 100% of the time.
Engine is a 1996 Corvette LT1 upgraded to a 24x GEN3 PCM system with individual coils, cam, throttle body, headers, injectors, etc.
Other than cranking, the car runs almost perfect, I have spent a lot of time tuning and warmup, idle, open loop, closed loop, part throttle and WOT all are darn good. I run it at track day events and it is really fun to drive and quick.
I understand most of the cranking parameters and most of the why but not enough to solve the cranking issue. If anyone has a link, pdf, doc or a tuning guide that would explain the GEN3 PCM cranking parameters, it would be appreciated.