yamaha 0x66 shut down

[Blue197320]

my motor is an 01 0x66 225. it has 3 new oem lp pumps, the injectors were just cleaned ultrasonically. has a new tp sensor installed. no water in fuel. the high pressure pump did seize up but i was able to free it up soaking it in fuel injector cleaner.

the boat will start and idle perfect all day. when it gets on plane around 3.5k to 4k rpm it will cruise there for a minute or two then just shut off like the lanyard was pulled. it will not build fuel pressure again unless you cycle the key off and back on. the mechanic and i water tested the boat with a fuel pressure gauge and test light. the fuel pressure is at 0 when the motor shuts off and he says ground is lost after the pressure falls. he says hes never seen this before. he determined high pressure pump based on the way it just looses pressure and given that it had seized before. i put a new oem yamaha pump and new vst screen in and water test the boat today. same exact thing happening. plane out to 4k and after 2 minutes shut off again. i have the factory manual and tested the inline high pressure pump resistor which is in line with the blue (negative) pump wire. spec is .53 to .57 ohm. it varies on my dvom from .5 up to .7 ohms. i was not able to check the resistance while the boat was running. i need this boat fixed asap, fishing tournament coming up and paid entry fee already. please help!!