just installed the borla cat back system last night and must say that as usual the quality and fit is amazing. it also has a very nice tone to it, although not much louder than stock. (not very helpful with out a sound clip i know, working on that over the weekend). i did notice however that the car seems to rev up quicker, not necessarily saying that it added x amount of hp, or that it is faster, just that the rpms raise faster and smoother. also the tips on the muffler actually look good, 100% better in person than in photos. so i just wanted to share my experience so far and will try and get a sound clip for everyone.