Civic with vafc fuel setup

Well i read ur reply and well lets say i had 270 injectors didnt put it on now im doing things diferently.
U want to keep the blue box, I got to say that the blue box is worth sh!t. Ive got extensive mods on my car and have tuned it but the blue box holds it back plenty. In other words its giving incorect amounts of fuel to my engine, maybe to rich. In my upper rpms my powerband tends to drop, y , obvisouly because of incorrect air/fuel mixture.
Ive already tried to run 270 cc with the blue box, just doesnt work