i am gonna put a testpipe on my car soon as when it stops snowing, i have a magnaflowmuffler and i wanna get the midmuffler, testpipe is 3inches i am not sure what size should i get the midpiping. i kinda dont want 2.25 because that the stock size, 2.5 seems ok. i thought 3inches would sound like crap until i seen this video, so i am not sure now.
http://videos.streetfire.net/video/F...12C9F837BD.htm

 

2.5" is fine unless you are getting a bigger turbo.

 

If you plan on upgrading your turbo definately just go the 3" piping.