I got my Diablosport Predator yesterday, so I was messing around with it today trying to get my speedometer to read accurately again. Is the speedometer on the dash programmed to read higher than actual speed? I had my GPS on the dash and when it showed 90km/h, my speedometer read ~92km/h and my SGII read 89km/h.
Driving home from work like this, my odometer said I drove 21.4km and my GPS said 21.0. Any ideas?