Anyways. Is your ecu stock or is it chipped? IACV or FITV stuck? What other mods have you got on there? I mean shit I have a 93 gsr mainly stock but it has like... type r internals (cams valves springs pistons yatta yatta) oh and intake mani and fuel rail and fpr
you can just about dump any sohc or dohc vtec ecu in there. Mainly an ecu that has the same obd type and make sure its for a manual.
p72 is a stock gsr ecu to answer your question.
Timing would make it idle like shit whether or not it was cold. If you have drivin it you would definitely recognize a timing ping if your an automotive tech for chevy lol ;-)
Try a stock ecu. My chipped p28 does that bad idle when cold bullshit.
What I was saying is my car is having compression issues and if I plug my p72 in and drive it around occasionally it will drop fuel maps down due to knock. The p28 has it disabled.
The p72 should NOT give you a CEL (less something is throwing it to codes)
p28 has ks.
chipped p28 = no ks as it's typically disabled due to upgrades causing that to trip.