Fuel flow test is a must
My DAR did not ask for a fuel flow test but I certainly wanted to know how well
my fuel system performs.
It is somewhat difficult to place your airplane in such a nose high attitude as to be 5 degrees above the highest anticipated angle of climb.
I pulled down the tail and then jacked up the nose wheel until the tail tie down ring touched the floor.
Additionally I placed the receiving gas can a couple feet higher than the fuel controller, simulating a very steep attitude.
The rest is straight forward, hit the boost pump for a number of minutes,
measure total gas pumped and calculate flow per hour.
Don't recall the precise flow on my 10 but it was around 50 GPH.
RV-8 finished (sold)
RV-10 Flyer 400 plus hours
Over 2500 Gallons of E10 mogas burned
Don't believe everything you know.