ok i will keep this simple. i just finished putting in the d15b in the rex, it already was mpfi and i ordered the obd0 to 1 jumper harness and the vtec sub harness and a p28. i did all the necesary lengthining of wires and i swaped over the obd 0 injectors to the new engine. i also have replaced the cap and rotor, plugs and it has a new fuel filter. it turns over all day long but no spark i guess. i know its getting fuel to the rail because after i got sick of trying to start it i pulled the fpr loose and there was fuel there. If its of any relavance when i pulled the old motor it wasnt starting either, i was doing pretty much the same thing. someone help me out please!! this thing needs to be running like yesterday.