1996 d16y8 swap
 

i just bought 1996 Civic and the previous owner put a d16y8 motor in the car. They however did not change the wiring harness or wire the vtec up. The car runs rough and the check engine light is on and says the the IACV is not working or the wiring may be lose. So I have changed the IACV and still have the same problem. Could the be due to not changing the ecu? Also can anyone give me so direction to how to wire the vtec up. With out having to spend a lot of money. Thank you