I have a G2X red that I bought used from someone. It seems to work great and logs the data OK, but some things don't work on the dash. When I'm in the pits, I cannot cycle through my laps using the left and right buttons. Also, I was instructing another fellow and his had predictive lap times in Display 3. I don't have that and my L Diff has never shown anything other than "0". I must need to do something, but what?
Thanks