Hey, I was wondering what kind of mods I should do to get some better performance out of my car...I wanted a faster acceleration and a guy told me I should get a new exhaust system and an open air intake....do any of you guys know how much an open air intake costs? and I've read that you guys like the borla and greddy exhaust systems..all those are dual exhausts right? how much do they cost? thanks for the help guys!