7.3 powerstroke acts like its running out of fuel
 

I have a few problems I need some help on. Truck starts and drives fine until at any random time it will cut out and act like its running out of fuel, bucking, shaking, loud injector ticking and no throttle response as it slowly bogs down and dies out stalling on the side of the road. Starts up just fine with no hesitation but takes a minute sometimes to idle up fine and not chug, lope and surge. Then it drives fine until the problem happens again. I replaced icp, both valve cover harnesses, fuel pump and filter, idm, did a whole bunch of mods but nothing worked. It's getting good volume of fuel with good pressure. Did a buzz test and it passes sometimes, it's never the same result with what injectors sound loud and which ones sound muted. On forscan it shows all 8 cylinders are high to low side open, and both banks are the same. I ohmed the harness from the idm and it was all 3.2 ohms across the board. Harness doesn't seem to be damaged. Is it possible it killed my 2nd idm? My turbo is another problem, a loud scratchy grinding noise at idle that gives me a headache like there is metal in the bearings. I'm lost and I need help. Anything would be greatly appreciated