Hi guys. Was out last night driving on a long run, had my road angel on and relised my speedo was way out.
At 80mph on the clock my gps was showing 72mph, now I understand that when u rely get going the clocks are always out but at 80mph I'm pretty shocked it's that un accurate.
Is it possible to calibrate it with vcds? I know vauxhalls have diffrent profiles for diffrent size wheels that you select with a tech 2