Bully Dog’s new BDX hand-held performance tuner gives drivers the edge they need, whether tackling tough terrain, pulling a heavy payload or maximizing fuel economy on the highway. A sleek full-colour performance tuner and customizable gauge display that safely and efficiently delivers more horsepower and torque to your truck when you need it the most. Fits 2013-2021 Dodge Cummins, 2013-2019 Ford Powerstroke, and 2006-2010 GMC/Chevy Duramax diesel trucks.