I had a twin 3inch difilippo system on my vy ss which comes with 2 centre mufflers and a rear resonator. No obnoxious drone and wasnt super loud but sounded amazing when driving hard. Had the car for maybe 5 years with that exhaust and was never pulled over by the coppers. Took the rear resonator off one day to see how that sounded, sounded awsome but just too loud around town in my opinion so put it back on.