Turn out much more horsepower and torque with our Big Hoss Diesel Tuners. You'll see dramatic power increases, but never have to worry about it harming your engine. Shop the full list below, or choose a vehicle category to find the tuner compatible with your vehicle.
Intense Power Gains With Our Big Hoss Diesel Tuner
Big Hoss Diesel Tuners are the best towing and hauling tuner that we offer. They give you significant increases in torque and horsepower, while the built in safety features protect your engine and drive train. This tuner does not require you to tap into the pump wire, but it is highly encouraged that you make the recommended airflow upgrades to get the highest power improvements possible.
Big Hoss tuners are fully compatible with all DynaFact gauges, and if you add a pyrometer to it, it will automatically enable a temperature control feature that will let you limit your exhaust gas temperatures. This helps you keep temperatures in a safe range to prevent meltdowns.
