We really couldn't tell much difference. I was really surprised that there was not any change in the sound of induction like there was when I installed a RotoFab CAI on my 09 G8 GXP. That made such a difference that it also actually increased the exhaust note. We haven't considered a tune but may do so. We're having the headliner replaced next Tuesday. I've learned that this is a common issue on these cars, especially if they sit outside in high heat states like Florida, where this care spent the bulk of its life.
BJ
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1971 GTO 455 HO 4-speed - Cameo White, White Vinyl Top, Jade Green Interior, Ram Air Hood, AC, Honeycombs and 8-track 1974 Formula 455 I Owned in 1975-1976. Now Own Its Twin From Same Dealership
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