Anybody sure on the exact symptoms of a bad IAC or Idle Air Control sensor? I've been tweaking on my fuel pressure and timing trying to get my motor to run smooth. It's running about 12 psi which I would think is perfect. The more I advance my timing the better my car comes out of the hole. With to little timing it will bog and hesitate. But with that timing more advanced every time I get to a stop it misses and tries to die, just kinda in spurts, like a bad miss but it seems to pull pretty hard and smooth the rest of the way with a couple light misses through the rpm band.

Any ideas would be great.

 

if its managing to save itself from stalling then id say teh IAC is still good. Id say the poor idle and ocasional miss is due to too much advance. Try setting the timing back to stock and see how the idle compaires to how it is now.