You said if you give it half throttle it'll rev up but not on full throttle?

Have you checked your TPS? Your TPS may have shit out. It should be at ~0.45mV or V (I forget the setting on the multimeter).

Get a FSM (factory service manual) from offline. If you have a SR download the english S14 SR one as it will be basically the same for trouble shooting crap like this.