Borla straight Pipes?
PS It aint no 13 sec car either.
I've watched TT C5's run 9's through a stock Z06 exhaust on pump gas, so if quiet and fast is your goal it can definitely be accomplished.
it is loud but its very free flowing and is 50lbs lighter then a stock C5 mufflers
I personally think they sound great, has alittle rasp but not too bad unless you run headers



