Hey, if you're buyin st2 nofriends, buy a map clamp with it. You'll actually see your hp #'s drop on the dyno w/ st2(pcm hates dyno's), throw on a map clamp though and like 3 runs on a dyno to tune it. Might need an exhaust too. St2 is incredibly nitpicky. Until ya have a dp/catback and a map clamp(or s-afc/emanage), St2 will never run right(as in not nearly as fast as it can be with very lil investment...clamps are 30bucks). Btw, dyno'd +21fwhp/33fwtq by getting my st2 leaned out to a usable level.