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Dyno chart

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VEHICLE

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TESTING CONDITIONS

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WHEEL PW
WHEEL TQ
DISPLAY:
Horsepower Torque
Peak Max Peak Max
RPM GAIN {HP} RPM GAIN {HP} RPM GAIN {TQ} RPM GAIN {TQ}
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OUR MOST ADVANCED SCREEN

OUR MOST ADVANCED SCREEN

Bully Dog’s 5" capacitive touchscreen is the first of its kind. Graphics and gauges are displayed in brilliant HD color. A fully customizable user interface means the perfect gauge layout for your needs is available at the touch of the screen.

GAUGES & DIAGNOSTICS

GAUGES & DIAGNOSTICS

The lightning-fast GTX Watchdog gives drivers the ability to monitor the industry’s most extensive SAE and Cummins-specific PIDs, or engine parameters, in real time. Datalogging capability makes it easy to record vehicle performance and play back later using Bully Dog’s free LiveLink software. GTX Watchdog also doubles as a diagnostic tool with the ability to instantly read and clear diagnostic trouble codes.

CUMMINS UNLOCK ENABLED

CUMMINS UNLOCK ENABLED

With the included Bully Dog Cummins Unlock cable, 2013-2016 Dodge Cummins owners can use the GTX Watchdog to unlock their truck’s computer for tuning. Bully Dog’s BDX and GT Diesel offer preloaded tuning for the 2013-2016 Cummins. The Unlock provided by the GTX Watchdog is also compatible with other custom tuning solutions, enabling drivers to choose the best option to match their needs. Bully Dog does not currently offer custom tuning for Cummins.

GTX Watchdog
$499.00
Bully Dog’s GTX Watchdog, optimized for 2013-2016 Dodge® Cummins® vehicles, is a revolutionary leap forward in performance monitoring–loaded with features and our most advanced hardware to date. GTX Watchdog starts up incredibly fast (even when remote starting the vehicle), and is super responsive, sporting a 5-inch capacitive touch screen that rivals today’s smart phones. Optimized for Cummins, GTX Watchdog gives drivers the ability to monitor the industry’s most extensive SAE and Cummins-specific PIDs, or engine parameters, on an easy-to-use device. High-resolution customizable gauges and WiFi connectivity add to the truly unparalleled user experience.

Drivers can log vehicle performance data as they drive–and play it back later using Bully Dog’s free LiveLink software. GTX Watchdog also gives users greater insight into their truck by reading out and clearing Diagnostic Trouble Codes (DTCs). Bully Dog’s unique grab n’ go magnetic mounting system allows the device to be kept front-and-center while driving, and then quickly stowed away when not in use. Finally, for those who want to take their truck to the next level, GTX Watchdog can unlock 2013-2016 Cummins vehicles (including chassis cab) for tuning using the included Bully Dog Cummins Unlock Cable.
* This product is not legal for sale or use in California on pollution controlled motor vehicles

FEATURES

Features vary for each vehicle and are not available on all vehicles
OUR MOST ADVANCED SCREEN EVER

OUR MOST ADVANCED SCREEN EVER

Bully Dog’s 5” capacitive touchscreen is the first of its kind. Graphics and gauges are displayed in brilliant HD color, rivaling today’s smart phones. GTX Watchdog starts up incredibly fast (even when remote starting the vehicle), and provides an ultra-responsive user experience. A fully customizable user interface means your perfect gauge layout is available at the touch of the screen. GTX Watchdog comes standard with a convenient grab n' go magnetic mounting system, enabling drivers to keep their device front and center–and then stowed away in seconds.

DIAGNOSTICS & DATALOGGING

DIAGNOSTICS & DATALOGGING

The lightning-fast GTX Watchdog gives drivers the ability to monitor the industry’s most extensive SAE and Cummins-specific engine and transmission parameters, in real time. Unlike competitors, the GTX Watchdog provides monitoring capability of the Aisin & 68RE transmission, as well as chassis cab vehicles. The device’s datalogging capability makes it easy to record vehicle performance and play it back with Bully Dog’s free LiveLink software. GTX Watchdog also doubles as a diagnostic tool with the ability to read and clear diagnostic trouble codes (check engine light). With integrated WiFi capability, GTX Watchdog is always up to date.

CUMMINS UNLOCK ENABLED

CUMMINS UNLOCK ENABLED

With the included Bully Dog Cummins Unlock cable, 2013-2016 Dodge Cummins owners can use the GTX Watchdog to unlock their truck’s computer for tuning. Bully Dog’s BDX and GT Diesel offer preloaded tuning for the 2013-2016 Cummins. The Unlock provided by the GTX Watchdog is also compatible with other custom tuning solutions, enabling drivers to choose the best option to match their needs. Bully Dog does not currently offer custom tuning for Cummins.

MONITOR THE MOST PARAMETERS

Accelerator Pedal Position
Accelerator Pedal Position (Relative)†
Actual Engine % Torque†
Altitude Adjust Table Select High*†
Altitude Adjust Table Select Low*†
Ambient Air Pressure
Ambient Air Temperature 
Barometric Pressure
Battery Voltage
Charge Cooler Temperature†
Charge Flow
Charged Air Cooler Outlet Temp
Compressor Inlet Density
Compressor Outlet Temp
Diesel Exhaust Fluid Line Press
Diesel Particulate Filter Press
DPF Operating State
DPF Soot Level†
Drivers Demanded Engine % Torque†
EGR Cooler Efficiency
EGR Flow Rate
EGR Position
EGR Temperature*†
EGR Valve Position
Engine Coolant Temperature
Engine Load (Absolute)
Engine Speed
Engine Torque
Engine Torque Actual†
Engine Torque Control†
Engine Torque Desired†
Exhaust Pressure*
Fuel Control*†
Fuel Level Remaining
Fuel Pressure Reg Current†
Fuel Rail Pressure (Actual)
Fuel Rail Pressure (Commanded)
Horsepower (Rotational)
Injector Duty Cycle - Bank 1†
Injector Duty Cycle - Bank 2†
Intake Manifold Temperature†
Intake Throttle Position†
Line Pressure
Main Injection Fuel Quantity†
Main Injection Time†
Main Injection Timing*†
Mass Air Flow 
MPG (Average)
MPG (Instant)
Oil Pressure*†
Pedal Position
Pilot Timing*†
Post 1 Fuel Quantity†
Post 2 Fuel Quantity†
Post 3 Fuel Quantity†
Post 4 Fuel Quantity†
Post Timing*†
Radiator Fan Speed
Regen State†
Throttle Pos (Actual)
Throttle Pos (Commanded)
Torque Converter Clutch
Transmission Gear (Actual)
Transmission Gear (Commanded)
Transmission Oil Temperature
Turbine Speed
Turbo Boost
Turbo Compressor Inlet Temp
Turbocharger Speed
Vehicle Odometer
Vehicle Speed
VGT % Closed (Commanded)
VGT Actual Position†
VGT Desired Position*†
VGT Actuator % Closed (Commanded)
* Unique to GTX Watchdog
† Requires EFI Live

DOWNLOADS

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Updater

This app lets you update your device's Firmware, Tune Revision or to load Custom Tunes onto your device.

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OS Requirements: Windows Vista/7/8/10