HammerDownAuto.com is a website created with the high demand for Diesel Performance parts that increase horse power and fuel mileage in mind. Customer satisfaction is always the number one goal. This is achieved by having unbeatable customer service and a great line of products.

Our products include many chips, modules and programmers from manufacturers like Superchips, Hypertech Chips, Diablosport and Bully Dog. We are adding products from time to time, so please be patient. The aftermarket upgrades we offer are the best on the market with torque gains up to 200 lbs/ft or add up to 171 ponies under the hood depending on the specific vehicle.

Upgrading electronics in combination with performance exhaust and air intakes to help your engine breath easer. More air means more power and even better fuel mileage depending on your driving style. Take it to the next step and replace you diesel injectors with aftermarket performance injectors to improve fuel atomization in combination with performance electronic upgrades, exhaust and air intake, and you could double your Diesel engine's horsepower and torque. Still not enough? Add on Bully Dog's Propane Injection Kit and you will have the fastest truck around.