Boost your power big time with a Diesel Engine Propane Kit. Available from Bully Dog Technologies and Superchips. The Propane Injection Systems increase horsepower, torque and diesel mileage. Available for Chevrolet Silverado Duramax Diesel, GMC Sierra Duramax Diesel, Dodge Ram Cummins Turbo Diesel and Ford F250 SuperDuty Power Stroke Turbo Diesel.