I installed my Corsa cat back system on Saturday. My Gibson stainless steel headers have not arrived yet.
I can feel a slight improvement in acceleration, but the benefit is mostly in the sound. I got the off-road "touring" version, which is a little quiet. That is ok though, because I haul clients around. If you don't have the client issue as a concern, I would suggest the Corsa sport version. I really like the quietness of the Corsa exhaust system at cruising speeds. I think it is even quieter than the stock system. Though, when you floor the gas pedal the system really growls.
My Gibson headers should be arriving any day now. I will report back after I install them.
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