Bully Dog GT Diesel Performance Tuner & Monitor

Unlock more horsepower, torque, towing performance, and diesel efficiency with the Bully Dog GT Diesel Performance Tuner and Monitor. This all-in-one diesel programmer combines preloaded tuning, customizable gauges, vehicle monitoring, diagnostics, and fuel-economy tools. A mount is included for convenient in-vehicle monitoring.

Key Performance Features

• Diesel Performance Tuner: Install preloaded, dyno-proven tuning designed to increase horsepower, torque, throttle response, and pulling power.
• Multiple Power Levels: Choose from available power settings to match daily driving, towing, fuel economy, or performance needs.
• Diesel Monitor & Gauge Tuner: Display more than 15 supported engine and powertrain parameters using customizable on-screen gauges.
• Driving Coach: Improve driving habits to help maximize diesel fuel economy.
• Towing Performance: Monitor critical data such as boost, coolant temperature, transmission temperature, and other supported parameters while hauling.
• Built-In Diagnostics: Read and clear diagnostic trouble codes without a separate DTC scanner.
• Performance Testing: Measure vehicle performance and review results using compatible Bully Dog software.
• Four-in-One Device: Combines a diesel tuner, programmer, monitor, gauge, and diagnostic tool in one unit.

Vehicle Compatibility

Top Supported Makes: Ford, Chevrolet, GMC, Dodge, and Ram.

Popular Diesel Applications: Select Ford Power Stroke, Chevrolet and GMC Duramax, and Dodge or Ram Cummins diesel trucks.

Compatibility, tuning levels, adjustable settings, monitored parameters, and performance gains vary by year, make, model, engine, transmission, and vehicle calibration. Use the vehicle selector above to confirm exact fitment.

Bypass Cable Requirement

The following vehicles require the Bully Dog 42215 Bypass Cable to tune with the GT Diesel. The cable is sold separately:

• 2018-2021 Ram 2500 6.7L Cummins
• 2018-2021 Ram 3500 6.7L Cummins
• 2018-2021 Ram 4500 6.7L Cummins
• 2018-2021 Ram 5500 6.7L Cummins

Emissions Compliance

Bully Dog tuning devices will not modify or delete vehicle emissions equipment. Bully Dog products purchased comply with the Clean Air Act. Preloaded tunes undergo extensive testing, and custom tuners are required to follow applicable Clean Air Act guidelines.

Disclaimer: Performance gains and fuel-economy results vary by application, vehicle condition, fuel quality, load, and driving habits. Not legal for sale or use in California on pollution-controlled vehicles.