I was probably overly dismissive of your purchase of a dual 3" exhaust system, mea culpa. If you're buying to make a nice noise, that's up to you. But the stock exhaust is not a joke. It is completely capable of flowing everything the stock turbos can handle and probably some to spare. I'm not singling anyone out who's looking to achieve their idea of the "sound" their vehicle should make, just trying to make sure the information is out there that unless you're going to upgrade turbos substantially, there are no horsepower benefits in swapping the stock exhaust. For approximately $2k, money is better spent on an intercooler and a tune.