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I'm keepin stock tune so if I go on road trip I can put back stock and use afm for gas mileage. ..I work at dealership and don't care about warranty...bought aftermarket gmpp warranty bumper to bumper zero deduct...I have heard great things about diablo intune 93 octane with car with my mods...with only CAI and muffler delete in l99 no need for custome tune and have heard 93 octane tune with my mods will have this car come alive in an auto
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