I've been tossing the charge-motion plates around. The only problem for me is that I saw a car with the same mods as mine except he had an aftermarket exhaust. He did a baseline pull which was 292 rwhp. Installed the CMP and was at 296rwhp. I'm at 294 rwhp and I just didn't see the benefit in $279 for 4-5 hp if I'm lucky. It's breathing pretty good right now. Now, if I were to port heads or supercharge it, definitely would need the deletes. I have also heard that the CMP don't like the cold weather either, not that I see too much of it down here.