Donâ€™t suffer with a sluggish stock exhaust system. These DPF race packages are built to the specifications of your Cummins, Powerstroke, Duramax or other high-performing engine. These diesel performance parts combine race-level exhaust systems with electronics to move your truck closer to perfection. Improve exhaust flow, horsepower, and torque with one of these packages. Set the parameters and get ready to race Baja, hammer down at the local track, or travel to the most remote campsite you can find. At Performance Truck Products we pride ourselves on delivering exceptional customer service and fast, free shipping. Unfortunately, we are unable to discuss fuel mileage as related to DPF race packages. Thanks for your understanding. Shop for these performance truck parts here.