I have been having high idle issue sometimes, and I found I can only replicate the issue when I rev the engine right after starting it. The idle likes to hang at 2k~
I finally caught it doing this on a log, and with it idling normally
Can someone tell me what's going on? Been happening to me for 2 years
Post tune
Tune just attached in original post
Base running airflow is awfully high in the colder temp areas....
This happens even at the high temps. Could it be an issue I'm using a 98 fbody LS1 3 prong ECT with a 04 GTO pcm? The temps always looked correct when data logging but thought I'd throw that out there.