Nothing sounds like a diesel truck with an exhaust upgrade - but what about when you need it quiet towing or around the neighborhood? We are joined by the founder of Glory Days Speed Shop to talk about his patent pending muffler for 4” and 5” exhaust systems. He walks us through the idea for the muffler, R&D, controlling the sound from the cab, and more!Learn more about your ad choices. Visit megaphone.fm/adchoices