I have a 2001 GTP with 65,000 miles, I got the car 2 months ago and been slowly putting mods on it. So far I have installed 3" down pipe, high flow cat, u-bend delete, K & N CAI, and I have a 180 T-stat i'm going to put in when it gets a little warmer. I feel my next step is a pcm, I was thinking of going with DHP i've heard alot of good things about them. My question is, do I have enough done to my car to put the tuned pcm in and do I HAVE to drop pulley sizes in order to put the pcm in? And will I feel a noticeable difference with the pcm upgrade and stock pulley? I'm new into the grand prix game, so all the help I can get would be greatly appreciated. Thanks
