I have a 2008 with 6.4L PS. 144,000 miles. I have driven since it was new. Never any motor problems, always kept up regular maintenance. I did buy a bullydog E3 programmer. NOT DPF DELETE, just a tow program. I had this installed since approx 75K miles. Back in December there was a notice sent from Ford about a re-flash to the PCM needed. I took it in for the Re-Flash and returned the program to stock. Ever since the Re-flash, my bullydog program is not operable. Bullydog says the new flash wiped out their programming capabilities. No problem, but ever since then I have been losing power randomly at RPM's over 2300. It just acts like it is almost in Limp mode. I can pull over and cut off the engine and restart, and the condition goes away for a short while, then comes back shortly. Seems as if more troublesome when engine is at operating temp. I am getting a P0088 code which says Fuel system pressure too high, but after hooking up on a ford diagnostic computer, the pressures it is reading at idle and under acceleration is within normal limits?? Has anyone experienced what i am describing or have any suggestions?