The Bully Dog Triple Dog GT Diesel, part #40420, fits Ford, Dodge and Chevrolet/GMC diesel trucks and SUVs. It combines four products in one: a downloader adding up to 120 HP, an on-the-fly tuner, a customizable four-function gauge pack and the Driving Coach fuel-economy assistant.
Download the Original PDF Manual
Not legal for sale or use in California on pollution-controlled vehicles.
Overview
Bully Dog products are built to be flexible, letting you customize your vehicle to whatever end you desire — outrageous race-track performance or more power up a steep grade. The Triple Dog GT is four products combined into one sleek design: a downloader that adds up to 120 HP, a tuner with multiple on-the-fly drive-train settings, a fully customizable gauge pack that monitors four gauge functions at once, and the conscientious Driving Coach. The revolutionary Driving Coach software monitors wasted vehicle energy and then tells the driver how to change their habits to improve fuel economy.
The GT Diesel works on Ford, Dodge and GM diesel trucks and SUVs.
Features
- Huge horsepower and torque gains (over 100 HP)
- Improved engine efficiency (fuel-economy potential)
- Four on-the-fly power levels
- Safety defueling
- Download features such as speedometer calibration
- Displays over 15 vehicle parameters (PIDs)
- Reads and erases diagnostic trouble codes (DTCs)
- Vehicle performance testing
- Free performance-testing software for PC
- Exclusive Driving Coach feature
- Full-color display with multiple color themes
- User-set day and night driving modes
- Easy installation
- Internet updates and upgrades
- Initiates DPF burn-off on ’09 GM and ’07.5–’09 Dodge diesels
Specifications
- Power gain: 100+ HP / 200+ lb-ft
- Display dimensions: 2.25″ H × 3.5″ W × 0.75″ D
- UPC code: 681018404204
- Packaging weight: 2 lb
- Packaging dimensions: 12.5″ × 12.5″ × 4″
The Horsepower
Bully Dog provides unrivaled engine tuning. The goal is power and torque that truly improve the driving experience — noticeable gains that push the driver back in the seat throughout the power band. It also means constant innovation: turning over new rocks and picking through old tunes to find a better way, and making sure every supported vehicle gets the best tune available.
The chart below documents the difference between a stock 2010 Ford 6.7L Powerstroke and the same truck tuned with the GT Diesel.
The Economy
The same meticulous tuning produces a more efficient burn inside the cylinder — and what that means is up to you. Put your foot down and Bully Dog tunes deliver instant power; keep a light foot and the same tune can deliver serious economy. Mileage gains depend on the driver, but with restrained driving the truck can return better economy than it did stock.
If improved economy is your only goal, the GT still offers unmatched features. The Driving Coach analyzes the vehicle’s fuel economy and the driver’s habits in real time and gives feedback to help improve them — so better economy when you need it, and more power when you want it.
Special Features
The features below are included in the GT Diesel. None are guaranteed to work on every vehicle due to unforeseen differences between individual OEM vehicles.
Driving Coach
The Driving Coach is an interactive software program included with every GT Diesel. It provides real-time audio and visual feedback to maximize driving efficiency. For the Driving Coach to be truly effective, it must be properly set up.
Performance Testing
The GT’s performance testing accurately calculates and records vehicle performance data for a variety of tests. You can trigger a test when the vehicle begins rolling or by using a simulated “Christmas tree” staging light displayed on screen. Tests captured include:
- 60 ft. time
- 0–60 mph time
- 1/8 mile time
- 1/8 mile speed
- 1/4 mile time
- 1/4 mile speed
Free Performance Analysis Software
Free PC software retrieves performance tests from the GT and lets you analyze your runs right on your desktop — speed curves, RPM, horsepower and torque, plus an easily shareable time slip.
Supported Features by Vehicle
Engine tuning, download functions, monitoring features and vehicle warnings vary by engine. Not all features marked in the charts are guaranteed to work due to unforeseen differences in OEM vehicles. Use the matrices below to confirm what is supported on your truck.
GM & Dodge
Ford
Product Upgrades
The following accessories expand what the GT Diesel can do.
Part #30420 — Pyrometer Probe Kit
- UPC code: 681018403849
- Packaging weight: 1 lb
- Packaging dimensions: 7″ × 5″ × 2″
Part #40384 — Heavy-Duty RAM Suction Cup
- UPC code: 681018306003
- Packaging weight: 0.45 lb
- Packaging dimensions: 6″ × 2″ × 10″
Part #30600 — Pyrometer Probe
- UPC code: 6681018403870
- Packaging weight: 0.4 lb
- Packaging dimensions: 7″ × 5″ × 2″
Part #40387 — 2 1/16″ Gauge Pod Adapter
- UPC code: 681018304207
- Packaging weight: 0.5 lb
- Packaging dimensions: 7″ × 5″ × 2″
Vehicle Applications
NOTE: Scan the QR code on the original product packaging for the most current applications.
Chevrolet / GMC
- Sierra / Silverado — 6.6L Duramax 2500 (’01–’13), 3500 (’01–’13)
- Kodiak / Topkick — 6.6L Duramax 4500 (’06–’10), 5500 (’06–’10)
- Express / Savannah — 6.6L Duramax 2500 (’01–’13), 3500 (’01–’13)
Dodge
- Ram 2500–5500 — 5.9L Cummins (’03–’07), 6.7L Cummins (’07–’12)
Ford
- F-Series 250–550 — 6.0L Powerstroke (’03–’07), 6.4L Powerstroke (’08–’10), 6.7L Powerstroke (’11–’13), 7.3L Powerstroke (’99–’03)
- Excursion — 6.0L Powerstroke (’03–’06), 7.3L Powerstroke (’99–’03)