for those of you who put one on, did you lose power or gain? how noticeable a loss or gain was it?

 

Their is no noticeable gain or loss. I do not think catbacks really make that noticeable of a change and that its all in the head. Flowmaster would be fine, I have been happy with mine. Go for it!

 

Flowmaster is probably the worst flowing system for a 4th gen...Good catbacks are good for 10-12 hp

 

Take my advice on this man. I put a custom true duel kit on my z and have loved it since. CRAZYYYY power gains and a really mean sound. Its well worh the 450 I paid for it. Granted.....you have to hook the x pipe up to a set of Longtubes....

 

I gained 12 at the wheels with my Flowbastard.