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and how crazy is the performance gain/bang for the buck w/ a tune on these trucks!?!


my last GMC 6.2 to get anything close to those gains probably would need LT headers, no cats, min “stage 2” cam, intake, and tune & I still am not sure that would equate to the same % increase in power & you’d probably be out $5-6k not $5-600 lol!!!


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