This past weekend I picked up a 2019 Grand Sport 2LT and it has the NPP exhaust. I thought it would be good to document the difference between that and a C6, LT2 with the Corsa Extreme (PN 14960) and X Pipe (PN 14127) before I traded it in. A few notes. The C6 was warm and had just been driven and it, along with the C7 was in park and maxed out around 4K RPM. The C7 was somewhat cold, just backed it out of the garage. The C7 also only has 200 miles so the motor isn't fully unlocked or broken in yet. the NPP was in track mode (wide open).
I recommend you listen to this over a good quality bluetooth speaker, not your phone as it doesn't sound as true.
I think the Corsa sounds better than the C7. Especially inside the car. Much more pronounced than the C7. But then again that could be because I'm not hammering on it because it's not broken in yet. I'll provide an update in a few weeks once I can get a better feel. The Corsa on the C6 sounds amazing when driving and slowing down. Had numerous compliments on it. No drone either. Love it.
