denalijoe Posted December 3, 2006 Posted December 3, 2006 Got my new 07 Denali xl today and love the new sound the exhaust makes. I saw a GM parts option to add a cat back exhaust system and wondered if anybody has done it yet. And if so whats it like. I think the Escalade is a little louder and throaty then the Denali and wonder if the cat back system GM offers makes the Denali sound like the escalade.
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