Well.. I heard somewere that vtec is no good for fi? May be bullsh*t I dont know, thats why I asked... Also ECU's arent the only thing that you have to change in an OBD0 car... If I went OBD2 for instance I would need a sensor in my gas tank... And A bunch of other crap... At least thats what my teacher said I would have to do to make it lagit.