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Bully Dog Triple Dog GT Gauge Tuner - Diesel

Product Code: E9BDT155.87
Bully Dog Diesel GT Tuner - 40420

Bully Dog Triple Dog GT Gauge Tuner


Bully Dog 40420

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Bully Dog Triple Dog GT Gauge Tuner

The Triple Dog GT, or Gauge Tuner, is an all in one, adjustable Tuner, Performance Gauge, Safety Monitor and Driving Coach. The Triple Dog really stands up to its name. The GT is an all-in-one downloader and monitor in one compact electronic device. With all the features contained in the GT it is amazing just how easy it is to install. Installation simply involves plugging the product into the vehicle's OBD ll port and performing a download to the vehicle's ECU. Whats more, the Bully Dog GT Diesel works on almost all late model diesel pickups as well as some commercial applications.

The Tuner feature adds power & economy mapping.

Performance Gauges
The Bully Dog Triple Dog Diesel allows the operator to monitor over 20 vehicle functions and parameters.

The Safety Monitor keeps track of vehicle temperatures and reduces horsepower when the temperature become too high.

Driving Coach
This feature is designed to help the user drive more efficiently. As a Driving Coach the GT will give the vehicle operator real time driving advice in order to maximize fuel economy up to 37% (according to It coaches the driver into better driving habits by providing real time visual and audio feedback pertaining to how efficiently he or she is driving. The Driving Coach also provides a "grade," on how efficiently the operator drove during a particular trip. This makes driving efficiently both constructive as well as fun!

Performance Gauge Functions:
  • Load Coolant Temperature
  • Fuel Rail Pressure
  • Manifold Absolute Pressure
  • Engine RPM
  • Speed
  • Timing Position
  • Air Intake Temperature
  • Mass Air Flow (grams/sec.)
  • Throttle Position
  • Fuel level
  • Battery Voltage
  • Ambient Air Temperature
  • Transmission Temperature
  • Pyrometer
    (w/ optional Sensor Docking Station
    Sold separately)
  • Boost
  • IPW: Injection Pulse Width
  • Barometer
  • Oil Temperature
  • ICP: Injection Control Pressure
Bully Dog Triple Dog GT Gauge Tuner

The GT has four different gauge styles including the Driving Coach feature, any vehicle parameter can be displayed as a large stylized gauge on the GT screen.

Bully Dog Triple Dog GT Gauge Tuner

Vehicle operators can use the Driving Coach feature to train themselves to improve their driving habits. A driver can now challenge himself or herself to become "the perfect driver."

Bully Dog Triple Dog GT Gauge Tuner

The Driving Coach will display one of six possible grades.
Grades are based on an average driving efficiency rating.

Features of the GT Gauge Tuner:
  • Added horsepower and torque
  • Improved fuel economy
  • Driving Coach Software
  • Full Color display with multiple color themes
  • 4 Power Tunes to Choose From
  • On-the-fly power level adjustment
  • Display instant fuel economy and trip fuel economy
  • Display current gear on vehicles with automatic transmissions
  • User set daytime and nighttime driving modes
  • Read and Erase DTCs
  • Safety Defueling
  • DPF Burn-Off for '09 GM & Dodge
  • Speed Limiter *
  • Rev Limiter *
  • Calibrate Speedometer *
  • Vehicle Specific Options *
  • Transmission Tuning *

  • * not available for certain vehicle makes & models

The Bully Dog Diesel performance testing will accurately calculate and record a vehicle's � mile times and everything in between. The performance testing gives the user the ability to trigger a performance test based upon when the vehicle begins rolling with a custom drag racing tree that is displayed right there on the screen.

Display and record performance results:

  • 60 ft. time
  • 0-60 mph time
  • ⅛ mile time
  • ⅛ mile speed
  • � mile time
  • � mile speed
Bully Dog Triple Dog GT Gauge Tuner

The charts displayed below show which features are available for all of the applications to date by Vehicle Make, Engine, and Year.

Bully Dog Triple Dog GT Gauge Tuner

Bully Dog Triple Dog GT Gauge Tuner

Bully Dog Triple Dog GT Gauge Tuner

Download Functions:
Download functions include vehicle governors and settings that can be changed only during a download.

Defueling capabilities:
Defueling is a safety feature that monitors vehicle temperatures and reduces horsepower if the exhaust, coolant, transmission or oil temperature becomes too high to maintain safe conditions for the engine. This is a user set function.

Monitoring capabilites:
A list of vehicle parameters and PIDs that the PMT monitors and displays.

GT Installation:
The GT is one of our easiest products to install! The diagram to the right illustrates just how few parts we require for installation.

GT Mounting Options:
The GT comes with a custom windshield mount, which can be upgraded to the Heavy Duty Ram Mount. In addition the GT mounting socket on the back of the unit is a universal T-socket style mount. This T-socket will accommodate almost any off the shelve mounting apparatus. Various mounting devices can be found under Programmer Pods & Pillar Mounts.

For easy installation, check out the
Bully Dog Sensor Docking Station
w/ or w/o optional Pyrometer Probe

Bully Dog and other marks herein are or may be registered or unregistered trademarks
of Bully Dog Technologies, L.L.C., in the United States and/or other countries.

Important Ordering Note for 2013 Dodge Cummins 6.7L Owners! Bully Dog have introduced a brand new and easy two-step process for the 2013 Cummins. Customers must first purchase a PCM Unlock from Bully Dog and then choose how they want to tune their truck when they receive the PCM. The GT Diesel will be able to easily tune these unlocked Cummins ECMs.
As part of the Unlock, 2013 Cummins owners will need to remove their truck's PCM and ship it to Bully Dog. We've made this as easy and pain-free as possible, providing a video tutorial on the process and a fully custom container for the PCM when it's shipped back. The entire process is outlined at When Bully Dog receives a PCM, our engineers will unlock it and ship it back with a super-fast turnaround that ensures drivers are not without their trucks any longer than absolutely necessary.

Important Ordering Note: Due to California C.A.R.B. regulations, we cannot ship Bully Dog part# 40420 to any California address!!




YearModelSpecifics Engine HP Gain
Part #Price Qty 
2001-2015Sierra / Silverado2500 / 35006.6L Duramax+120hp
200 lbs.-ft.
40420Add to cart
for price
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