I got a shop that offered to install an exhaust on my car for $750.00 bucks it would be a dual 2.5 inch piping because he mumbled something about how a dual 3" would make my idle drop too low.( is this true? ) and it would have 2 mufflers with the carbon fiber look (dunno what kind) and stock cats with resonators? Would this be a good or bad setup for my FI G? And Would I need tuning afterwards?

 

Wow 336hp, is that to the wheel? To your question, yes you will need more tuning once u installed the exhaust bc this will mess up your a/f ratio and make u run leaner.

By the way, is the vortech loud while driving and what did you use to tune your car? I'm thinking about going SC in my auto some day.