I have been getting negative / minus -  engine load readings above 30% throttle on twin cams and 50% throttle on hexheads.
 The readings rise as expected then carry on increasing but negative readings.
 This is with several different bikes and 2 GS911 units,
 I don`t remember this in the past is it a bug in the software updates.
 It came to light when doing full throttle run trying to sort another problem.