sgrinavi

So today on the way home from Sebring the exhaust noise from the car got louder and I noticed a vibration on acceleration and a bit more than usual when cruising. I didn't break anything at the track and didn't really notice a sudden change. All the gauges / readouts look normal and it seems to have plenty of power.

I don't get any unusual vibrations when I rev the motor at stand-still, mostly when under acceleration.

2005 C6 Coupe - M6 with headers, intake and some other bolt-ons.

Any ideas where I should start looking?

AORoads

something from the headers on back loosened up? hangers, clamps, touching trans/frame, etc.?

sgrinavi

I hope it's that simple, thanks!