Im havin trouble understanding how to get my car to workas it should. Some one at some point has done an engine change and put a d15z6 in a car made with a d16y7 which is a non vtec engine! It has been done well and as far as i can tell, apart from the eletrics. its clear they havent changed the ecu. As i have a p2e something lyk that anyway! So far i'am aware that i need a p28 and a conversion harness but is it as simple as that and will i need to wire the vtec in my self if so how do u do that?