Bully Dog GT Diesel Tuner & Monitor 03-21 Cummins/ 01-16 Duramax/ 99-19 PowerStroke

Bully Dog's BDX hand-held performance tuner is specially designed, so you always have the edge you need to tackle tough terrain or pull a heavy load. This sleek handheld tool combines flash and convenience with the ability to download the latest product updates via the cloud. BDX's built-in WiFi keeps your tool up to date on groundbreaking new features, enabling you to run the most current dyno-proven calibrations, as well as the latest firmware, and up to 10 custom tunes. Bully Dog tuning devices will not modify or delete vehicle emissions. Tunes that are preloaded have gone through hours of testing to ensure the safety of drivers and the environment. MODEL YEAR COMPATIBILITY: • 2003–2021 Ram 5.9L / 6.7L Cummins • 1999–2019 Ford Powerstroke • 2001–2016 GM 6.6L Duramax IMPORTANT NOTES: • All software, including the Device Updater, is NOT Mac compatible. A PC with Windows Vista/7/8/10 will be required.  • The unlock cable is NOT required for 2013-2017 Cummins vehicles as long as the tuner has been updated to the latest version. • The unlock cable is REQUIRED for 2018-2021 Cummins vehicles and is sold separately.