I have a 2002 3500 c&c and I have seen some threads describing the same problem with no results. I’m having loss of power at wide open throttle after about 2500 rpm. New fuel filter today (6/1/18). Hooked my solus scanner to it and the desired rail pressure will show up to about 200mpa. When the power loss occurs I can watch the actual drop down into the teens and the trans will not shift. I can back off the throttle a little and the rail pressure will come back up and the trans will shift. The frp actuator desired and actual stay around the same. I can hear the turbo spool and I have no smoke. It will puff a little smoke when free reved. Truck is all stock no tuning or gauges. The pump was replaced about a year ago Maby 15k miles by me. Injectors have been replaced at some time and balance rates show near perfect. I can not see any kind of fuel in the oil. All help is appreciated. Thanks.