GT Gas Performance Tuner & Monitor
The GT Gas tuners unlock more horsepower & torque to meet the unique demands you put on your vehicle. With preloaded tuning you can plug ‘n play. The built in “Driving Coach” feature helps improve driving habits for better fuel mileage. Customizable gauges track performance, and a wide variety of hauling and offroading, all while giving you plenty of power to take on tough jobs or improved fuel economy for long highway hauls.
* This product is not legal for sale or use in California on pollution controlled motor vehicles


Features vary for each vehicle and are not available on all vehicles

Dyno Proven Performance

The GT Gas delivers DYNO proven tune files that INCREASE HORSEPOWER and TORQUE

Monitor More Parameters

The GT Gas comes complete with a mount for on dash monitoring of a huge list of parameters.

Now With Custom Tuning

Stores up to 10 custom tune files created by your local Bully Dog / SCT Custom Tuning Dealer. *Not available for all vehicles


Adjustable Options vary for each vehicle and are not available on all vehicles

  • Accessory Delay

    Control how long the accessory items will remain on after the engine has been turned off and the doors remain closed. Accessory items such as the radio, cigarette lighter, ect.

  • Active Fuel Management (AFM)

    Used to enable or disable the AFM (Active Fuel Management) V8 <> V4 functionality.This will only function if the engine is mechanically equipped to shut off cylinders.

  • Adjust Timing

    Adjust the timing of your engine from +4 to -8 to increase power or fuel economy according to your vehicle’s specifications.

  • 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.

  • Axle Lockers (2WD and 4WD-Hi)

    Easily engage the wheel lockers for off-road traction. (Rubicon Only off road) Lock front and rear differentials in 4WD-Low, 4WD-Hi and 2WD. To enable this feature, highlight the enable button and return to the main screen, then press the locker button on the dash (once for front and twice for rear). The front locker will automatically unlock above 20mph. The rear locker will automatically unlock above 25mph. Both lockers will automatically reengage (lock) if the system is still activated and the vehicle speed drops below those speeds.

  • Axle Ratio

    Correct the vehicle speedometer (and fuel efficiency calculations) if you have changed the gear ratio on your vehicle. If no gear ration modifications have been made to the vehicle, then choose the stock setting when the tuner prompts you to choose a gear ratio. This will ensure that no modifications are made to the stock program.

  • Boost Control

    Used to enable or disable the use of a specialized data table for turbo/ supercharged engines. (Enabled: Peak torque calculations take effect when the overboost timer has expired. Otherwise it would perform like a regular engine)

  • Brake Torque Management (BTM)

    This will disable the BTM (Brake Torque Management) from functioning when the traction control system is switched off.

  • CAM Variation Relearn

    Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. Would have to be done at the dealer but now can be done through the GT.

  • Coolant Temperature

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

  • Coolant Temperature Warning

    This gauge option shows the coolant temperature in °F or °C. This information is used in warning settings to alarm when the coolant temperature limit is exceeded.

  • Daytime Running Lights

    Dissable or enable daytime running lights.

  • Disable Traction Control

    Disable the traction control. Unlike the [DTC] button on the dash, the traction control will stay off until the setting on the unit is changed even if the vehicle is turned off.

  • Engine Fan

    Enable and disable the engine fan regardless of coolant temperature. (This feature does not take effect until the unit returns to the Main Gauge Screen.) The coolant temperature light will not indicate if the vehicle begins to overheat when the fan is disabled.

  • Fog Light/High Beam

    Be able to use the fog lights and the high beams at the sametime.

  • Fuel Dynamics Compensation (FDC)

    Used to enable or disable the FDC (Fuel Dynamics Compensation) algorithms.

  • Head Light Delay

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

  • Headlight Approach Timer

    Adjust the length of time the lights remain on when a vehicle unlocking the vehicle with the remote.

  • Horn Chirp Length

    Adjust the length of the horn chirp to either short or long when the vehicle is locked using the remote.

  • Horn Chirp On Lock

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

  • 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.

  • Idle Learn Reset:

    Vehicle relearns idle parameters depending on the current environmental variables.

  • Multiple Displacement System (MDS)

    Enabling the MDS (Multiple Displacement System) initiates a fuel saving 4-cylinder engine mode and disables additional engine cylinders.

  • Optical Flash On Lock

    The hazard lights will flash each time the doors are locked using the remote when this feature is enabled.

  • Pyrometer Temperature Warning

    This gauge option shows the pyrometer temperature in °F or °C. This information is used in warning settings to alarm when the pyrometer temperature limit is exceeded.

  • Relearn Vehicle Data/Transmission Adaptive Learning

    The transmission adaptive learning, (TAL), changes the way the automatic transmission in the vehicle shifts based on driving habits.

  • Reset Engine Oil Life

    Reset the vehicles's engine life indicator manually through the GT instead of cycling through all the dash options.

  • Reset Transmission Oil Life

    Reset the transmission oil life manually through the GT. This would have to originally be done by the dealer but now can be done on demand.

  • Rev Limiter

    Regulate the highest RPM that an engine can reach before the engine is electronically limited. Increasing the RPM limit is recommended only for racing purposes. One of the most important ways to protect your engine from damage is to keep the RPMs from going too high.

  • Seat Belt Chime:

    Turn off seat belt reminder chime.

  • Smart Unlock Configuration

    Change the way your vehicle when using a remote. Unlock only the driver door with the first button press and unlock the passenger doors by pressing the button again, or unlock all the doors at once.

  • Speed Limiter

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

  • Switch A/F Sensor Reading

    Switch between O2 sensors for correct Air/Fuel Ratio values.

  • TPMS

    Adjust the Tire Pressure Monitoring System.

  • Throttle Sensitivity

    Adjust the throttle sensitivity for stock, fuel saver, performance and extreme modes.

  • Tire Size

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

  • Transfer Case Ratio

    This function is for users who have physically replaced the Transfer Case. It is only necessary to adjust this when swapping out the Transfer Case for a different Case with a different low range ratio.

  • Transmission Shift Firmness

    Change the shift firmness of an automatic transmission.

  • Transmission Shift Points

    Change the RPMs at which an automatic transmission will change gears.

  • Transmission Temperature Warning

    This gauge option shows the transmission temperature. This information is used in warning settings to alarm when the transmission temperature limit is exceeded in automatic transmissions.

  • Unlock Driver Door

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

  • Wide Open Throttle Disable (WOT)

    Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph.


These are definitely worth having.

  • Update Agent

    • The Update Agent is an online software program created to update electronic Bully Dog Products. Download the Update Agent today!

      Download Now

      OS Requirements: Windows Vista/7/8/10

  • Performance Testing Software

    • This software allows you to download logged performance tests from your GT and output your performance results onto your PC.

      Download Now

      OS Requirements: Windows Vista/7/8/10