Bully Dog specializes in aftermarket components for trucks, SUVS, and diesel vehicles. Their top of the line programmer allows you to tap into your vehicle onboard computer. By gaining access to this computer your able to install new tunes. Some of their programmers allow the option for custom tunes, or come pre-installed with tunes. The tunes help you gain back missing power, as well as access to many features of your vehicle. All Bully Dog programmers have capabilities to data log, and also allow you to view your vehicles perimeters in real time. Depending on your vehicle, and its specific needs there are several Bully Dog programmers to choose from. If you have any questions when browsing through their catalog, reach out to one of our experienced representatives and we will be happy to help you make a more informative decision.