Replaced my custom built 2.5" from a local shop to this exhaust. I expected a little more sound, but not much. Boy I couldn't have been more incorrect. The car is louder, but I didn't expect it to be so much deeper in tone, and the little subtle burbles from my tune went from a little kitten meow to a full on lion roar.
You won't be worried about Hector and his Spoon engines with this exhaust, highly recommended.