I've been planning to purchase the Pypes Street Pro dual exhaust system as the first major modification for my 2010 SE/G. Since I'm working with a somewhat limited budget, I wanted to get what I consider a major mod complete before moving on. While doing my research, I have read about performance gains and performance losses with dual exhausts. One suggestion is to add a CAI (which is also a planned mod as well). Again have read about CAI's doing great things or doing nothing at all. So my fellow Challenger owners, which should come first; the chicken (CAI) or the egg(Exhaust)? :think: Your responses and your time are appriciated.