according to you, ? normal for there to be a difference of 10 km/h between the speed? that marks the instrument and the real (measured with gps)??
The strange thing ? for the latter ? in perfect soncronia with that measured by the control unit with the ELM 327 and multiecuscan.
Therefore, it follows that ? the instrument that marks a speed? more (this helps to prevent the camera!!!!!)...
It is possible to align the instrument with the ECU?