22RE no power. 240K on body Rebuilt motor w/ 1k on it.

22RE no power. 240K on body Rebuilt motor w/ 1k on it. new plugs, wires and cap n rotor, new TPS, O2 sensor, air filter cleaned, new exhaust system, new fuel filter, timing at 8* advanced, ran injector clean through injectors, idle good no misses, but when I bring rpms up to 2500 i hear motor miss and I it has very slow accel. i have it floored just to keep up with city traffic. I've felt the truck with more power. EGR? fuel pressure?