Posted for MikeEasley@aol.com:

Correct me if I'm wrong, but isn't the TCM fuel system based on variable
fuel pressure? So if you push the gas through the line, increasing
pressure,
you're going to get more fuel flow. I know when I change tanks I flip on
the
low boost and only get about .2 GPH increase. That's at altitude, leaned.
The fuel pressure and fuel flow also increase when I flip on the low boost
before takeoff, but I don't have an exact number for that increase. At
altitude,
I can drop as low as 9.X psi in cruise LOP.

Jeff, was your test at full rich or leaned?

I think we could assume that the high boost "effect" is variable depending
on the mixture setting.

Mike Easley