Derived from the world of motorsports, the BMW M Performance Drive Analyzer, (an On-Board-Diagnostic (OBD) stick which is plugged into the vehicle, provides key driving dynamics data. It also offers extensive and professional recording and analysis options that can be evaluated and displayed via your smartphone.
LINK:
https://www.bmwpartspros.com/oem-par...kgUGFnZQ%3D%3D