Originally Posted by Azjulian
you can turn it on - as the red fuel flow cube is connected to the G3x. the problem is that because of the return flow of fuel that isn't metered you are never going to get accurate readings (although you could rough estimate for cross country flights based on data gathered).
I was considering adding a fuel flow cube on the return line, but I really don't want to mess in any way with my fuel system even if it is the return line - want to keep it simple.
You can actually adjust it for very accurate readings, but at only one specific flight condition (such as continuous cruise), just like Skyview/HDX RV-12's do.
If the airplane spends a lot of time flying in different flight conditions (such as doing touch&goes), it will have some error but always in the conservative direction.