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Bully Dog GT Diesel Dodge Ram 2500 6.7L; Cummins 2010-Current 40420

The GT Diesel tuner unlocks more horsepower and torque to meet the unique demands you put on your vehicle. With shift-on-the-fly tuning*, customizable gauges to track performance, and better control of defueling and regeneration, you’ll be able to summon the low-end power to take on tough jobs or improve fuel economy for long highway hauls. Space for up to 10 custom tunes helps you adjust for the many ways you put your diesel to the test.
Pricing: $449.00


•Head Light Delay
Set the amount of time that the head lamps remain on after the engine has been turned off.

•Optical Flash On Lock
The hazard lights will flash each time the doors are locked using the remote when this feature is enabled.

•Speed Limiter
Change the top speed that the vehicle will reach before the engine automatically limits the power needed to go faster.

•Unlock Driver Door
Disable this feature so all of the vehicle doors will unlock with one press of the button on the remote.

•Auto Door Lock
Enable the vehicle to automatically lock all the doors any time it reaches a speed of 15mph. Once the vehicle comes to a stop, if the driver's door is the first to open, then all other doors will automatically unlock.

•Horn Chirp On Lock
The vehicle horn will sound each time the doors are locked by a remote while this feature is enabled.

•Tire Size

Correct the speedometer if you have changed your tire size from stock.

•Coolant Temperature
Current coolant temperature; this information is used for warning level and safety defueling settings.

•Low End Power
Increased throttle sensitivity across the full RPM range.

This gauge option shows the pyrometer temperature. This information is used in defuel settings to reduce the exhaust temperature when the limit is exceeded.

This gauge option shows the boost. This information is used in defuel settings to reduce the boost when the limit is exceeded.

•Idle Adjust
Enable and select a value for Engine Idle position. This is a great feature for keeping voltage in the vehicle up while running auxiliary electronics off of the vehicle’s power system.


  • BUL40420
  • BUL40420
  • Bully Dog
  • New

Shipping Information

  • Item Requires Shipping
  • 1.5 lbs.
  • W11.2000” x H4.1000” x L8.8000”

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