I have a 91 TT with 2.5" exhaust that sounds nice. I also have a 90TT with full 3" exhaust. Yeah it sounds nice, but make no mistake, it is LOUD. For a Daily driven car, it maybe a bit much. Not sure if 3" DP and 3" to 2.5" test pile with 2.5" cat back would be closer in sound to case 1 or 2 above.