tommy, my uncle has a 06 2500 HD with the 5.9 cummins, only thing he has is a 5" Borla exhaust, BullyDog chip, and a small shot of propane. at 70mph it will walk sideways without hesitation. the straight 6 turbo disels are no joke.
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TurboRAM Member #5
24psi & Stable
GET SOME 