Good idea on the Underdrive pulley, I went ahead and srapped that. I got a front ceramic coated plog, 3" dp, 3.5" pulley, wizair with amsoil filter. For the pcm I went ahead and scrapped the overkill pcm. my car just seems really inconsistent at times and I'm thinking it might be experiencing a decent amount of KR. I'm going to get it dyno tuned instead, the guy is keeping my car for 4 days and he said it would have 0 KR when he was done with it.