GpS modules are useful in creating track maps, but can be very useful to gain critical data for analysing projectories and motion. Information relating to the chassis and the behavior of the driver on the track. With GpS you will be able to visualise the circuit, your lines and the relative speed, and to analyse any errors. You will be able to see your performance and lines imported over real track image via Google Earth. The GpS Unit connects to your Mychron 4. The Data that is recorded by GpS will evaluate: * Position and trajectories * Speed * Angular velocity of distance * Longitudinal and lateral acceleration of distance * Time on the turn * Lap times and split times *We recommend that you use an external 12v source for powering your system. The GpS will run a full day on the M4 internal battery but must be changed daily.