07 6.0 multiple codes no power
Working on my bosses truck and am getting multiple codes. p0278 p0299 and p2284 along with a p1000. the truck doesnt have enough power to get over 55 mph. I am stumped we installed eight new injectors a reman turbo and sent the truck to a dealer to have the ficm reflashed and turbo relearned. the truck will build 20lbs of boost with no problem. I dont see any smoke dumping out the tailpipe even under full throttle. I checked the fuel pressure at the filter and we are getting 45 psi at wide open throttle. Any help would be greatly appreciated.
The truck is bone stock 6.0 5r110 4x4 cclb. the reman parts are stock replacement.