Mine seems to have this issue on startup when it's been sitting overnight but not bad. I have it in the track exhaust setting and it's pretty loud in the mornings when I drive it to work but it mellows when the engine warms up. It doesn't bother me though coming from my 2010 Camaro SS that had SLP LTs and full x pipe loud mouth 2 exhaust system. Now it was loud!!
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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