Supplied with the original plug, making it extremely easy to connect. Calibration is a straightforward process during a brief initial trip. These models are supplied with a restrictor for the lower gears and/or the maximum speed is limited. The connected power module indicates to the ignition/injection system that a gear is selected for which engine output is unlimited, cancelling any restrictions. Of course, this is only intended for racing, and is not approved for use on public roads.