Better than expected!
This is a VERY high quality exhaust system. Looks amazing, and while it didn't turn my 2012 Fiat 500 Sport into a race car there was an immediate power increase at the pedal. The sound is a bit louder than I expected (but I'm not a young man anymore) but I've gotten used to it, and quite like it now. It's a bit droning at first, but now I find myself not turning on the radio as much so I can listen to the car. Highly recommend.