Originally Posted by CCCLXXZ

Much worse than what you have already tried. Extremely loud and drony, and tons of rasp. Resonators are a must, mufflers not so much. I did research on this and found a handful of g37's running this way. Absolute suicide for the exhaust note.

I would suggest welding up a custom exhaust using a magnaflow canister or a vibrant dual resonator setup. I will offer to do it if you like, I would just need your car for an afternoon or evening. I have a saclam silencer on mine, otherwise I would mock it up on mine and provide it that way.

My other recommendation would be to do resonated test pipes. Bar none you will get the best performance and sound out of this with the stock exhaust...It will save you a little over the price of some HFC. I point you to Fast Intentions for their product. Plus if you go with their exhaust in the future, you will stay consistent.

Nick J.