This is why I want a Duramax!
Borrowed my buddy's 220k mile 4X4 Duramax this afternoon. Intake, exhaust and a tune... 20mpg average on the DIC and will leave my SS in a cloud of black smoke. My truck says 11mpg on the DIC.
Borrowed my buddy's 220k mile 4X4 Duramax this afternoon. Intake, exhaust and a tune... 20mpg average on the DIC and will leave my SS in a cloud of black smoke. My truck says 11mpg on the DIC.
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