Quote Originally Posted by chunky View Post
has anyone ever put other OEM mufflers on their GTP? like from a v8 car so that it's still quiet and doesn't sound like **** like most aftermarket exhausts for out cars (the exhaust manifold's fault, nothing we can do about it.) but has a better flowing muffler.

i was thinking from the V8 gtps, stang, camarro, lexus or some other car with a V8.
stock muflfers are good for 300+ horsepower. are you putting out at least that much?? if not, your stock mufflers are flowing just fine

if you want more power, remove your catalytic converter. if you wanna do absolutely nothing for your cars performance, replace the mufflers