Caterpillar, Cummins, Detroit, Paccar, Mercedes Gauge Tuner

Upgrade your truck’s power, efficiency, and drivability with the Bully Dog Heavy Duty GT Performance Tuner. Designed for serious truck owners who demand more from their diesel engine, the Heavy Duty GT delivers proven horsepower gains, improved torque, and real-time engine monitoring in one easy-to-use device.

The Bully Dog Heavy Duty GT plugs directly into your truck’s OBD-II port, allowing you to safely optimize engine performance while keeping an eye on critical parameters such as exhaust gas temperature (EGT), boost, coolant temperature, transmission temperature, and more. Its high-resolution color display mounts cleanly inside the cab, giving drivers instant access to performance data without distraction.

Built for towing, hauling, and daily driving, the Heavy Duty GT offers pre-loaded performance tunes that enhance throttle response, pulling power, and overall fuel efficiency. Will Not modify or delete vehicle emissions, comply with the Clean Air Act. Whether you’re pulling heavy loads, working long routes, or simply want more responsive performance, this tuner is engineered to handle the demands of heavy-duty trucks.

Key Features & Benefits:

• High Quality Gauge Tuner
• Tuner Capabilities Include
• 75-100 Additional HP (Specialized Tuning For Additional Power)
• 6-12% Fuel Mileage Economy
• Speed Limiter Adjustments
• Diagnostic Reader
• Driving Coach
• Emissions Tested
• SAE Tested
• Watchdog Monitoring
• Fits Many Makes And Models Of Trucks
• Backside Features:
  • T-Slot Mount Socket
  • HDMI Port
  • Micro SD Card Slot
  • Mini-USB Port
  • 6 And 9-Pin Data Plug Connects Device To Vehicle
  • Lock Ring Receiver Will Secure The Data Plug To Port

The Bully Dog Heavy Duty GT (46500) is a smart upgrade for owner-operators and fleet drivers looking to improve performance while maintaining reliability. Trusted by truck enthusiasts nationwide, it’s a proven solution for maximizing your truck’s potential.

Upgrade your truck’s performance with the Bully Dog Heavy Duty GT – built tough for real-world work.

Accessories Available:

• 6 Pin Diagnostic Plug
• 9 Pin Diagnostic Plug
• HDMI Cable
• HDMI Port Saver 270 Degree
• HDMI Port Saver 90 Degree

• Suction Cup Mounting Kit