Yes! I was chasing a high egt problem. I replaced my wheel bearings, my brakes, and found a questionable boot that prompted me to change them. No changes. I have a tow tune where the egts stay cool but its a 40hp tune. Not much fuel.
Idle was buttery smooth for a while whch was partly acclaim for the irate fuel system I have.
Then it started getting ragged. Back when it was below zero everyday it would lope so bad that it was undriveable. I changed ipr, icp sensors, and checked wiring to no avail. Its been a long effin road. Im kinda ticked that all the 250+k mile parts are fine and happy its the hightech, billet gutted, hpop on steroids that cant pull it together,lol.
Edit:yea, my pump will build up to.3600 psi of hpo but it may also kill the truck and not restart until the pump cools off.