"It is better to keep your mouth shut and have people assume your are a fool then to open your mouth and prove you are one."
I dont konw why I wrote that.. it's just funny.. as long as a crack myself up...
Pretty much everyone makes sense on here.. the 250hp 2.5 exh.. the 300 hp 3.0 exh.. OK I am not an exhaust specialist but I am friends with numerous 11-13 second turbo car friends/ shop owners and with turbos you would like the biggest opening... just run 3inch if you want.. it's not going to hurt you..but the 2.5 exhaust will also do the same thing till you get in those higher #'s then it's not going to dramatically hurt you till you get in the 400hp-600hp range.. ect.. getting an aftermarket cat will also help you.. yes if you want to run a straight through exhaust it will be good but I have done that on other cars .. go to the track and listen.. I am not a big person on being too loud but there is a time when it is too loud to daily drive..
Now lets get back to what we were put on this earth to do.. [^]