Well, I'll post my experiences, but I didn't vote, because I am honestly not sure about my VP44... .
Never had a fuel pressure gauge until a week ago - 45K miles. Still on original lift pump at that point. Had fuel pressure gauge installed a week ago, found my lift pump was dead th that time. Installed new OEM lift pump I got from Cummins. Now have 15+ PSI fuel pressure. Truck had never shown the slightest sign of fuel system problems.
After installing new lift pump, went for freeway run to see what fuel pressures were at cruise and WOT. Well, at about 2600 RPM, suddenly all fueling just cuts out. Comp box was at 2x3. Changed Comp to 5x5, tried WOT again. Now fueling cuts out at 2700 RPM, but still cuts out. The moment I lift my foot off the pedal, strong fueling resumes instantly. Tried several Comp menu/sub menu settings, all do this.
Called Edge yesterday, talked to Aaron. He suggested I check the pump wire. Went home last night, unhooked pump wire, it's connector is solid, reconnected wire, went for another freeway run. Fueling still cutting out. Aaron said small chance my VP44 could be dying, but he will send me a new Comp to try.
Naturally, that scared the jeebies out of me, as I know the VP44 is mondo $$ :{
So... . until I get the new COmp box, I won't know for sure what's going on. I can't really accdept the VP44 could be having a problem and acting the way my truck is currently acting though. I would expect that if the VP44 was dying, it wouldn't be so inconsistent in when it cuts off fueling, and how quickly it resumes fueling when I lift foot off pedal.
SO I don't know the health of my VP44 to be honest... ...
Tom