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.