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You just need a GPS, most cell phones you can get a GPS app then just go for a ride to at least 55 and check both readings. There are numerous ways to recalibrate your speedometer.I used my Hypertec tuner, J scan or other dongles.
You just need a GPS, most cell phones you can get a GPS app then just go for a ride to at least 55 and check both readings. There are numerous ways to recalibrate your speedometer.
I used my Hypertec tuner, J scan or other dongles.
