I have this cat back with Kooks LTH and it’s very loud. The drone was bad till I added the MBRP 20in resonators.
If you have LTH I’d go with their street version.
it’s just as loud as corsa but has a much deeper tone.
It's god awful. I got rid of all the MBRP stuff and went back to the stock resonator and stock cat back. Car still made the same power (780HP) so it's just noise. Used to blow my pictures off the walls. I gave it away basically for like $150.
Any system that has Race, Track, Extreme in the name, avoid.
If we're looking at the same thing, that's just a straight-pipe with a Helmholtz resonator. There's no muffler of any kind. It will sound exactly like every other straight-pipe system of the same diameter.