Error on speed data

[Yellowjacketboss302]

Thanks. That explains the speed discrepancy between the OBD values and the GPS values. The XGPS at 5 hz appears to be VERY smoothed. Do you know of any other units that produce speeds more consistent with OBD speeds?

[gplracerx]

Thanks. That explains the speed discrepancy between the OBD values and the GPS values. The XGPS at 5 hz appears to be VERY smoothed. Do you know of any other units that produce speeds more consistent with OBD speeds?

The XGPS160. I can post a chart from the event I attended this weekend if you're interested.

[Yellowjacketboss302]

Yes, please post the charts. Charts show GPS and OBD speeds, right?

[gplracerx]

GPS speed is the solid line, OBD wheel speed is the dotted line. The GPS speed is smoothed a little bit, but the OBD speed is a little noisy, as it doesn't update as frequently as the GPS.

[Yellowjacketboss302]

Thanks. That looks much better than my 5 hz GPS. I'll try to post one of my charts.