Designed to work with BIG horsepower, traction limited vehicles (Forced Induction Vehicles – Aftermarket/OE Builds – Front Wheel Drive). Adjustable on-the-fly, to enhance your traction & acceleration. Simple to install, the unit plugs in-line between your vehicle’s pedal position sensor & vehicle harness. Use the included dual-dials to adjust the feel of your Pedal and the amount of available Traction. Beneficial dual-dial save featured is great for new drivers, adjust to reduce the ability to overpower the tires. All units are waterproof, backed by a lifetime warranty, and designed & assembled in the USA.