Dubbed TrckrX, it is an OBD-II tracking and data logging system built into a BMW E36 M3. The car in question is being used in some auotocross competitions. The driver wanted instant access to some ...
The OBD port may also be used to upload information to the Electronic Control Unit (ECU). Car manufacturers can update software this way, while tuning companies use it to remap the ECU for extra ...