Mine does this also occasionally. It seems to bog down and back fire like mad. Let of the throttle and let it settle and its seems fine afterward. The warmer weather does seem to make it happen more often.
The time is now set, we swapped the radios over set the time then swapped them back. He has to meet me again when the clocks change!
I'm happy to nominate my self as the northeast time setter if it helps anyone.
Pm James1470, he has upgraded to the Bluetooth head unit and now has the rs monitor working.
You can't set the time for some strange reason.
Adjustable maps are only available on the meg version as far as I'm aware.