Internal pump pressure is a very important part of what he is teaching us so it seems like a great place to start.
From Hagar's hillbilly tuning post, 2nd page near the bottom:
"Pressure in pump MUST be 43.5 Psi at 1000 RPM engine "
"Pressure at 2000 Rpm -about 75.4 Psi"
Internal pump pressure will determine how much fuel flows through the "OUT" bolt on top of the pump. From Hagar's page #3:
"If the IP flow is less than about 25 litres per hour at idle ---you will never get to really great Smileage. "
An hour seems like a long test so values for shorter times will be listed when I (or someone else) find them and can post them here.
On page 4 Hagar notes:
.SAGA : ---- somehow a TYPO sneaked in here somewhere ---so here are the numbers for you ALL one more time.
Numbers are from BOSCH and given for the 107 A pumps.
PUMP RPM first. 500 RPM 3 bar 750 RPM 4.1 bar 1000 RPM 5.2 bar.
so we can plot a line to 2000 RPM say 10.4 bar --EH ? ---ergo at 4000 RPM ENGINE ---about 150 PSIG