Currently the fuel burn is registering high, resulting in a fuel remaining reading lower than what I actually have in the tanks.  I hadn't made the connection between that and the GPH reading, but now I see that they are inter-related.  I usually don't fill the tanks to the brim as I can carry 96 gallons total but I only fly about 100-150 miles round trip.  Why carry all that extra weight.

Mark;

I rarely fill my tanks either.  I have a calibrated dip stick I use to measure the fuel at one point; then keep track of how much I add over a series of flights; then measure again.  Then compare actual measured with EM2 readout, and adjust the FFCAL as discussed in the manual. I have found that difference between EM2 totalizer and measured is different for a 4-5 hr flight than for a series of shorter flights, which I guess isn’t too surprising, but it gets you close until you make those long flights.

96 gallons – wow, that should give you quite a range.

Al