How do I change the vehicle application on a Bully Dog GT Tuner? From the main menu on the GT, scroll up to the top and select Change Vehicle. From here you will be able to select your application.

Can I use my bully dog on multiple vehicles?

Yes, you may return to stock and tune a different vehicle up to 5 times. In order to tune multiple vehicles simultaneously, you will need a device per vehicle.

How do you set a Bully Dog GT tuner back to stock?

To return your vehicle to stock, From the main gauge screen, select “Menu” using the top left button. Scroll down to the “Uninstall GT/Download”. Follow the onscreen prompts until the device shows the download has been completed successfully.