Originally Posted by odb812

If the camera isn't pointed exactly straight forward, as it is in the video in post #20 of this thread, the accelerometer data will be off. Also if you point the camera backwards, the data will be backwards. I use Harry's on my phone and mount my phone to a panel that is angled towards the driver. All of my g-force data is a bit off.

Originally Posted by Matt Romanowski

I'll have to check some more, but I tried it out in my Suburban tonight and it seemed like it was reading correctly when the camera was askew to the car longitudinal axis. I think it's using the GPS to correct the readings.

I'll check it out some more tomorrow morning and answer for sure.