Guy Tripp joins Paul Wilson and Chris Emhke on today's episode. Guy has been pushing the boundaries of what a Duramax engine can do since he bought himself a 2003 LB7. He started out on the gas side of performance modifications and eventually would start what we know today as SoCal Diesel. Guy talks about the progression of Duramax engine builds, how competition continues to get pushed, and how much further these engines can go.