boostcontroller

OK, so its a H22a built internals... It has a t3/t4e turbo an turbonetics wg, an a blitz bov, there is no leak in the hot or cold pipes, At 3000 there is HEAVY HEAVY HEAVY lag, or hesitation, the engine doesn't want something to spool I think, the car has stock fuel lines, injectors an pump, do you think that is the problem or is it more of a problem then i think. Also i heard something about a butterfly in the throttle body. Thanks