gkwpnut

First 200 miles much more buildup on out side exhausts. Been running more in track mode./this normal


Update now at 450 miles have sound management tuned off still more buildup on 2 outboard tips. 50 miles to go

sandu002

Yes, you exhaust baffles are open in track mode.

Pinstriper

I have 450 miles on my C7, use premium non ethanol and all four exhausts look clean as when I receiver my car.

gkwpnut

updated