Map Spinning/GPS issues

[F150Chief]

@2irft

Generally there are 3 factors affecting your navigation accuracy:

1. Wheel tick frequency and revolution - tells apim how fast/far your vehicle has moved longitudinally (make sure the 7D0-03-01 xxx xxxx xxxx and 7D0-07-03 xx* **xx xxxx) is correct for your vehicle
2. Installation Angle of APIM accelerometer with respect to vehicle - tells APIM how to estimate your direction based using gyro in the event where GPS lock is lost, or to interpolate direction between gps points (7D0-07-02 **** **** **xx and 7D0-07-03 **xx xxxx xxxx)
3. GPS lock - self explanatory

The settings for Wheel Tick are 20ms for Sync 3 and 40ms for Sync 2 regardless of vehicle model. Installation Angle is a good catch.