Originally Posted by
Fivefingerdeathpunch
Doubful the IAT was ever bad nor was it ever a problem.
Without seeing a data log it's hard to guess at a reason though it's seems hard to pinpoint on this one.
Start up idle asks for 1200rpm all the way up 90ish degree coolant temp but what I can't see are the tables not inlcuded in HP Tuners. There are very limited tables to see what other start factors are in place to determine start up airflow and idle air control valve controls on first start up.
The 2002 grand prix we have I know hits at least 1,500rpm on start up and then drops to 1000-1100 slowly then down to 750 after 110-120 degree coolant temps.
