Hi, My name is Brayden Fleece, from Fleece Performance Engineering LLC. www.fleeceperformanceengineering.com Check us out for any of your diesel needs, from custom ECM tuning to Bosch pump work. Check out our newest product developed for the 2004+ Duramax equipped vehicles HERE. It's called the TurboBrake and uses the VNT turbocharger to slow the vehicle like a butterfly style exhaust brake, only better. Plus it installs in 15 minutes, with no cutting and uses factory style connectors inline with the harness. Thanks, Brayden
