I need some help. Sometimes after I drive my car hard I get a rough idle when I come to a stop or it may even stall. I have the agp wastegate boostin 17 lbs, 15 to redline and I am on stage 0. I have never had this problem before. I have hit the fuel cutoff but never had this rough idle. I am throwing a cel at the moment and I have not reset the pcm. Could this be the problem? Any help would be appreciated.