On 31 Oct 2006 19:15:59 -0800, "Chuck Gould"
wrote:

2400 = 80% of WOT = 64% of max hp = 272 = approx 15 gph.

For some reason or another, the reading we got on the engine diagnostic
screen was 12.2 gph at 2400.

And that is probably correct. The most likely reason for the
difference is in the props but who knows. I'm using a rule of thumb
approximation that assumes the engine is putting out peak horsepower
at WOT.