hehe, time to start testing continuity, voltages, and resistance on all your sensors. for certian sensor faults (such as crank angle sensor), you'll get thrown in a safety mode that limits your revs, a/f, vtec, etc. double check the ecu is correct for the motor. if you cant figure it out by yourself, there should be a number on the ecu seperated by 2 hyphens, as such: xxxxx-xxx-xxx. the last 2 groups are what we would need to tell you. most likely, since it was swapped, some wiring needs to be done and/or modified. a haynes manual relating to your motor, not your chassis, will be your greatest asset.