Have a look here for the operation (and possibly follow up discussion as this is diesel related and not carbureted).
http://ecomodder.com/forum/showthrea...html#post86551
The control sleeve position is what determines the volume of a stroke. If the control sleeve position can be determined by rpm and throttle position, then cool. Still a little fuzzy on the linkage inside the pump.
The computer is the mpguino I'm sure.
OpenGauge / MPGuino FE computer - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com
You might have to roll your sleeves up to get the answers you seek.