Without a doubt, add to it (or save for) a Tuner. Nothing else makes such a big change to the way they drive. It will be better in many ways with one. You need to do a search to decide what you want as there are two main choices as I see it: The Xcal2 or the Diablo Predator.Baginoman said:ive got $175 to spend..i was thinking about the o/r H-pipe..what do u guys think?:eyebulge: