Hi guys, looking to fit a sports hi-flow cat to my B7 2.0t quattro and thought you guys maybe the ones to advise me which one to go for? Or if you have / know of any for sale? My car has currently got an AmD stage 1 and I'm going to get the upgraded software to stage 2. However will stop at hardware mods on the sports cat. Any advice or feedback would be much apreciated!