injection pump 2002 7.3
There is no "pump" on a 7.3 powerstroke. Your injectors are fired by high pressure oil supplied by your high pressure oil pump. It is controled by the IPR by the PCM. You can do a 10k mod (adding a 10k resistor to the ICP sensor lines). With your edge tuner, I would not do this as edge jacks the ICP pressures already.
Start looking for a chip that plugs on to the PCM, 6 settings on the fly, much better tuning and better tranny controls. Edge does nothing for your tranny.
Swamps is who I use for all my tuning, but there are several good companys out there.
Fuel gets to the injector with low pressure fuel pump at about 55-70psi, then the HPOP pressurizes the injector and pushes the fuel out of the nozzle when the time comes... Over simplified but...



