Runs great until power loss at 3000 rpm. What problem could cause this symptom without throwing codes??

truck otherwise runs smooth and strong. replaced all coils, MAF, and fuel filter. runs great at idle and lower rpm but hesitates and feels like it is starving for fuel or air once you hit over 3K. it only comes into play when accelerating to merge on freeway or to mash on the pedal to pass another car. I would like it to run properly above 3000 rpms too.