Saw this thread in Gear...readings can be suspect if the 9v battery is low on power:
http://forums.bmwmoa.org/showthread.php?t=63511
For those of us that use the TwinMax, might be something to check out.
http://forums.bmwmoa.org/showthread.php?t=63511
For those of us that use the TwinMax, might be something to check out.