SoCalDiesel's Guy Tripp talks to Danny and Paul about Duramax engine builds and what owners need to consider. Guy is a pioneer in the diesel performance aftermarket. He's a mechanical engineer with many years of design and manufacturer experience with cylinder heads and other high-performance parts for gasoline and diesel engines. Guy got into diesel following the introduction of the Bosch Common Rail, which many credit with creating the diesel industry we know today. In this episode, he goes into detail with the evolution of diesel parts, like cranks and pistons. And he talks about the jet ski he built and powered with nitrous. Sounds crazy - but that's what mechanical engineers do - bend the envelope to create parts for the rest of us.