how much gain?

[RioRed94vert]

how much power and torque would lost/gained by installing an o/r h pipe and dump with stock headers for now? Anybody running this combo? Any advice is appriciated.

 

[TheDamned]

i have stock headers\cat-back with a MAC O\R h-pipe and I didn't FEEL a big difference, maybe a TINY one on hp\tq... But I did HEAR a big diff tough

 

[RioRed94vert]

would it be sensible to have dumps?
Its not an 11 second car I just want that thunderous sound

 

[DoHcHoLlIdAy01]

would it be sensible to have dumps?
Its not an 11 second car I just want that thunderous sound

I had stock headers, mac o/r H-pipe, flowmaster 2 chambers, and dumps. It sounded like an old car. Very loud and obnoxious. I found that it did add a little power up top end and it lost a little torque on the bottom. Not a big difference in power though. I found a good sound is the Mac H-pipe w/cats, flowmaster 3 chamber cat back with 2 1/2 tailpipes, and Motorsport shorty headers. This will give a good sound but bearable. This will also keep it smog legal if you need it to.