Thread: I have an issue I cannot seem to figure out...

Overkill did that write-up you were talking about and it worked fine for me. Since you adjusted the the screw did you go back and look at the TPS voltages to see if they are within the range they are supposed to be?

here is the write-up in case you want to verify your settings.
Ontario Quebec Club Grand Prix :: Throttle Position Sensor Optimization

Does sound like you are getting unmetered air from somewhere. If you weren't, and the IAC were 0, I would think the car would run badly.

I just look at one of my last scans and my IAC is between 17 and 20 in gear at idle, but I also have a hole drilled in my TB blade.