High IAC's, how can I lower?
 

After a TR227/224 and head install. I have gotten my car to idle, but the IAC's are at 130-132 at idle and go up to 152 with the A/C on. How can I get this down to the 50's that I keep hearing to be where I need to be? :confused:

Re: High IAC's, how can I lower?
 

You need to drill, drill, drill! But if your car runs and idles OK under all conditions, I say don't worry about what the IACs are.

Re: High IAC's, how can I lower?
 

IAC just indicates the position that your Inlet Air Control servo motor is at. As long as your car is idling fine, as Cal said, don't goof with them.

Good Luck

Re: High IAC's, how can I lower?
 

I drilled mines wit a 7/32nd drill bit and hooked up gm's tech 2 and iac counts went as low as 27 and as 2001camaroguy recommended to me should be between 30-40. but as cal said above, as long as ur car idles and runs good dont worry bout them iac counts. As for me ill go 1 more step bigger (15/64) cause my car surges a little @ low rpm's.