Quote Originally Posted by LS1GTP View Post
Sorry to jack the thread, I was just about to make a thread, but I have a 3" catless downpipe and stock exhaust, if I put in a 3" glasspack in place of the stock resonator, would my mpg go up? It's only $50 for one so it's probably worth the expense I would think? I'm not wanting it to be loud though.
Anyone else have an opinion on this?