Bully Dog 40420 Programmable Tuner, GT Platinum Diesel
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.
Adjustable Options with GT Platinum Diesel tuner:
- Coolant Temp Warning
- This gauge option shows the coolant temperature in °F or °C.
- 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.
- 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 Temp 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.
- Pyrometer Temp 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.
- Speed Limiter
- Change the top speed that the vehicle will reach before the engine automatically limits the power needed to go faster.
GT Platinum Manual (PDF)
*Note-Duramax LML and LGH are not shift on the fly
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
More Like This
Bully Dog 40417 Programmable Tuner, GT Platinum Gas
Bully Dog 40470 Programmable Tuner, BDX
Edge Products 84030 Insight CS2 Programmer, 1996-Up OBD-II Vehicles
Edge Products 84130 Insight CTS2 Programmer, 1996-Up OBD-II Vehicles
Edge Products 86000 Insight Pro CS2 Diesel Programmer, GM/Ford/Dodge
Edge Products 86100 Insight Pro CTS2 Diesel Programmer, GM/Ford/Dodge
Edge Products 85401 Diesel Evolution CTS2 Programmer,GM/Ford/Dodge/RAM
SCT 5416P Programmable Tuner, SCT Livewire TS, GM
Edge Products 85400 Diesel Evolution CTS2 Programmer,GM/Ford/Dodge/RAM
Edge Products 85300 Diesel Evolution CS2 Programmer, GM/Ford/Dodge/RAM
Q & A
Speedway Motors employee Pat O. talks about the CPP Hydroboost Brake System.
Speedway Motors employee Pat O. is back to talk Ford Automatic OverDrive Kickdown brackets and kits.
Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!
Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.
Follow along as Jeff installs an early 700R4 transmission for the big block in his 1967 Chevelle. See how this unit is upgraded and converted to a later 30 spline style.
Read how to wire a lightning sprint engine. This detailed account of how to successfully wire an engine will ensure a smooth installation.
Looking to replace a turn signal switch in your street rod, rat rod or muscle car? Kevin explains the install process in his 1954 Belair, which you can apply to your own build.