Bully Dog Heavy Duty GT Diesel Fuel Mileage Tuner



  • 75-100 Additional HP (Specialized tuning for additional power)
  • 6-12% Increase in Fuel Economy
  • Speed Limiter Adjustments
  • Diagnostic Reader
  • Driving Coach
  • SAE Tested
  • Watchdog Monitoring
SKU: 46500 Category: Tag:


The HDGT is Bully Dog’s top heavy duty product and represents years of development and ingenuity. The HDGT is every big rig owner’s dream. This SAE approved tuner is equipped with a complete gauge package, diagnostics capabilities, and Driving Coach software.

The Heavy Duty GT’s tuning options surpass those offered by competing tuners in customization and selection. Choose between the standard Economy Tune, the Economy+Power Tune or let a Bully Dog trained professional like us create a custom tune tailored to your needs. With the Heavy Duty GT you can monitor live efficiency readings and safety warnings at the same time; Read & clear trouble codes and perform diagnostics on the road without a mechanic; Adjust the top speed limiter; and so much more. The physical installation takes less than 5 minutes.

Monitoring Capabilities Include*:

  • Speed
  • RPM
  • Boost
  • Throttle
  • Load
  • Battery V
  • Coolant
  • Intake Temp
  • Oil Temp
  • Oil PSI
  • Turbo EX Temp
  • Fuel Rate
  • Inst Econ
  • Avg Econ
  • Trip Dist
  • Trip Fuel
  • BD Aux
  • BD Pyro 1&2
  • Truck Pyro 1&2

Available for: ECM Tuner Caterpillar, Cummins, Detroit, Paccar, Mercedes

Additional information

Weight 2.9 lbs
Dimensions 14 × 12 × 6 in


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