9-5 Workshop
Exhaust Pipe Size Question
Okay, so I've decided to get a Magnaflow street muffler like http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=9257 or http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=9259
Originally, I wanted to go 2.5" after the flex (2.25" now), but after...