The Bully Dog Thruster Throttle Booster is an electric throttle enhancement device. It plugs in-line between the pedal position sensor and the OE wiring harness to improve throttle response. Boost your vehicle safely, easily and economically with the Bully Dog Thruster. You can adjust the sensitivity level on-the-fly using the included power level dial. You can feel the change as you drive. Plus it works great in off-road situations because of it’s waterproof design. And, whether your vehicle is stock, or you use a performance tuner, the Thruster is compatible!