Matt stops by with his long-bed LMM Duramax that sounds like a jet taking off. We go over the truck, its setup, and the mods that make it insanely loud, then let it run so you can hear just how wild ...
AUTOPOST on MSN
That knocking sound under your hood isn’t always fatal—and usually isn’t worth a $5,000 repair
A knocking sound from the engine often triggers worst-case assumptions, but piston slap is a far more common—and usually less dangerous—culprit. It occurs when a piston lightly contacts the cylinder ...
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