Home - Bully Dog
Bully Dog began in American Falls, Idaho in 1998 as an enthusiast business focused on improving diesel engine performance. Since then, the brand has come to stand for leading-edge engine ECU calibration, high-quality aftermarket parts, and precision data-logging & …
Support - Bully Dog
DOWNLOAD. Bully Dog tuning devices will not modify or delete vehicle emissions. Bully Dog products that are purchased comply with the Clean Air Act. Tunes that are preloaded in our devices have gone through hours of testing to ensure the safety of the drivers and the environment overall.
BDX Performance Programmer - Bully Dog
Preloaded, street-tested, dyno-proven tunes boost horsepower, torque, and throttle sensitivity. Reads and clears DTC (Diagnostic Trouble Codes) with ease. This app lets you update your device's Firmware, Tune Revision or to load Custom Tunes onto your device.
GT Gas Performance Tuner & Monitor - Bully Dog
The Bully Dog GT Gas tuners unlock more horsepower & torque to meet the unique demands you put on your vehicle. With preloaded tuning you can plug ‘n play. The built in “Driving Coach” feature helps improve driving habits for better fuel mileage.
Bully Dog 40420 GT Diesel Tuner & Monitor - Performance Tuning
The Bully Dog GT Diesel tuner unlocks more horsepower & torque to meet the unique demands you put on your vehicle. With preloaded tuning you can plug ‘n play. The built in “Driving Coach” feature helps improve driving habits for better fuel mileage.
Performance Tuners and Monitors - Bully Dog
Explore Bully Dog's Performance Tuners and Monitors for enhanced vehicle performance, fuel efficiency, and real-time monitoring. Optimize your ride now!
Heavy Duty WatchDog - Bully Dog
BULLY DOG BIG RIG HEAVY DUTY SEMI-TRUCK PERFORMANCE Tuners, Turbos and Manifolds built to take big rigs to the next level. See how much our products can improve those long hauls. SHOP NOW
ECM Tuner - Bully Dog
The Bully Dog ECM Tuner is built with simple, easy-to-use performance in mind. This powerful device comes preloaded with the same high performance, dyno-proven tunes as our gauge tuners, except it is designed to be stowed away after installation simply set it and forget it.
Heavy Duty GT - Bully Dog
The Heavy Duty Gauge Tuner incorporates Bully Dog’s SAE tested and emissions tested diesel engine tuning for both power and economy. Bully Dog tuning devices will not modify or delete vehicle emissions.
UNLOCK YOUR DEVICE - Bully Dog
Enter your device serial number into the serial number field to get started. IF YOU LIVE IN CALIFORNIA AND PURCHASE AN UNLOCK YOUR ORDER WILL BE IMMEDIATELY CANCELED. WE ARE UNABLE TO SELL UNLOCKS TO CALIFORNIA RESIDENTS. Note: You DO NOT need an unlock if you have purchased a new tuner.