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Quieter than stock Exhaust system needed. 08 Denali xl
Resonator Removal Somebody mentioned removing the resonator made their's more quite? Easy to do? I will try refrain from ranting about who at GM decided to make the top of the line SUV's louder than the rest of the lineup. There are many more products out there to make your exhaust...- MARK509
- Post #20
- Forum: Performance
