The GT Diesel delivers DYNO proven tune files that increase horsepower and torque
Comes complete with a mount for on dash monitoring of a huge list of parameters
Stores up to 10 custom tune files created by your local Bully Dog / SCT Custom Tuning Dealer (Not available for 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
Boost - This information is used in defuel settings to reduce the boost when the limit is exceeded
Current coolant temperature
this information is used for warning level and safety defueling settings
Dissable or enable daytime running lights
Idle Shutdown Timer - Set the length of time the vehicle will idle until the engine turns off
Increased throttle sensitivity across the full RPM range
Adjust the RPM of the PTO from the unit manually
The transmission adaptive learning, (TAL), changes the way the automatic transmission in the vehicle shifts based on driving habits
Change the top speed that the vehicle will reach before the engine automatically limits the power needed to go faster
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. *Duramax LML and LGH are not shift on the fly. * This product is not legal for sale or use in California on pollution controlled motor vehicles
The bully dog disel is good for towing and fast acceleration but realy bad on disel. Performance wize is really good you can feel the horsepower as soon as you install ot.
By redzombie from houston tx
Bully Dog Gt Diesel!
The Bully Dog Diesel Gt Tuner "40420" has by far been my favorite programmer i have had the liberty of using on my truck. I have tried many different brands and the Gt really stands out. Not only did it give me a incredible power increase with 2-4 MPGs better but it also gave me all my necessary gauges needed to keep the truck safe.
This tuner is very user friendly. The install could not have been easier just plugging into the diagnostic port and simply hitting install. Not only was the install easy but changing power levels was as easy as pushing up or down being able to go from TOW to EXTREME in seconds!
I would highly recommend this product to anyone who is wanting a good overall programmer/tuner to really wake the truck up without causing any damage.
Thanks Bully Dog!
By CumminsFan from Pocatello, ID
Lots of bang for the buck
Just purchased this programmer for my 06 duramax, very impressive power gains especially in extreme mode. This is the only programmer I have ever had so I dont know if there is anything better but I can break the tires loose at 45mph on dry pavement in extreme mode so I think thats good enough. I am getting 4 to 6 miles a gallon better than stock. The display shows you everything you need besides the exhaust temp but you can buy the sensors for that seperate.
By Epic from Gainesville, Tx
a must have
put the triple dog GT on 03 dodge ram 3500 CTD, easy set up, one wire to fuse box! the hardest part was routing wires and trying to decide where i wanted to put it on the window... great power gains, as well as 1-2 mpg(19.9mpg) increase while turning 35s and speeds 70-75. the unit is a little small, about the size of my BB Curve, but not to small where its hard to read... driving coach is nice to have, makes good driving like a game. if you really follow the DC i would see mpg gains of prolly 3-4mpg maybe more... this is a must have prduct
By towboater from Crosby, Tx
It added 3 miles per gallon and added much needed horse power for pulling my camper.
Founded in 1998, Idaho-headquartered Bully Dog has become synonymous with powerful, economic tuning for 4x4s. When you�re looking for a high performance programmer to give horsepower and torque a jolt in your Jeep, Bully Dog has options. Additionally, the company carries cold air intakes and accessories like pod mounts and sensor docking stations. GT programmers for Jeeps offer multiple power settings and advanced gauge/monitoring abilities to maximize your fuel economy. Bully Dog makes modules for gas and diesel applications capable of diagnosing and tuning to keep your Jeep at the top of its game. Shop Bully Dog Now