Bought for my 2000 VW GTI VR6. I have decided whether to return only the secondary muffler or the cat or not. I wasn't sure how it would sound but settled on this Magnaflow after going on youtube and hearing other Magnaflows on other VR6s. He's perfect in every way. I have stock manifolds, a stock cat and a stock resonator. Removed the standard case silencer and replaced it with this one. Remember that every car is different. - At low speeds, less than 2k, it is almost silent. Still idle. If you drive properly, it can be very quiet. - After 3k it opens and sounds very rough/aggressive. Loud enough to be intimidating but quiet enough not to be a problem with rattling windows etc. There's a slight rumble on the motorway that keeps the engine at 3km, but it's only noticeable with the radio off and the windows rolled up. and the passengers don't talk. Removing the stock muffler and replacing it with that removed about 40 pounds in my case. Arrived well softened with 3 stickers and warranty card. All cars are different but I can say that this exhaust made me very happy.