With all the different choices out there for aftermarket, Cat-Back exhaust, I'm wondering with those that have made the change what are your feelings , good bad or indifferent. I've considered Invidia, RS-R GT-2, Magna Flow, to name but a few.

I'm sure there are scads of others but since the car is street driven I don't want race levels of noise.

 

http://www.youtube.com/watch?v=pJHGbCMzvLw

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Interesting !! Is it fair to assume that with an exhaust change their will be little if no performance improvement, only a different 'sonic signature' and maybe a weight reduction. I have yet to see any 'real' Hp / Trq #'s published ??