Had anyone used an external high pressure pump to get more flow? If you do the math the injectors have huge flow rates (even when considering they cant fire during exhaust stroke), so it seems the limiting factor of fueling the gen V is actually the high pressure pump flow.
A common pressure washer shaft driven pump seems to offer a cheap solution, they typically spit out 4k psi which is may improve flow of the injectors, or could be regulated down to 3k. Just need to slap a pulley on it make a bracket, then have a hydraulic shop make a hose.