It seems that getting the Latimer to recognise the Dual GPS is not automatic any more. That was part of my problem. I have to stop and start it each time. However the realtime display still does not show the actual speed, but it's evidently recorded in the file since the overlay shows it on replay. ...

I use one of those little Lithium emergency battery start packs which has a couple of USB charge ports on it. Last the whole day. Just leave it in the glove box with the USB cord hanging out and plug in the phone when need be. Also charges the DUAL GPS.

I have been having a similar problem since I upgraded to never version this spring. It also seems to have a problem if I get aggressive and the G-florces (0.8G and above) convince the phone to flip orientation (iPhone 6). Any idea how to stop that? I just upgraded to the lasted APP just now and will...

So, can I use the xgps150 (which is Bluetooth) with a Bluetooth OBDII reader like the GOPoint BT1?