Just got my car back on the road. I still have stock injectors, fuel pump, and throttle body, but I am running gm 847 with the trick flow heads, and all the normal valve train parts (rrs, am pushrods, springs and all the like). Also have headers with true duals. The problem is when I first start it up it idles fine, revs fine everything is fine. Then when I drive it for a while and try to come to stop it tries to die... I have to keep it running. Is my iac maxed? Or is it bad? Can this be taken care of through a better tune? Any help would be appreciated. I am putting new fuel pump and injectors in next week. Also has a pcm for less tune.

 

You have any logs of the car? We could guess all night long and never come close to the problem.

 

Hopefully tomorrow I will have some