ukcivy

right need some help guys, ive installed the d16z6 into my 97 civic which had a d16y7 before. ive used the d16y7 engine harness and did the various change like iacv trick ect but i got a wiring diagram of the d16z6 engine and the d16y7 and instead of getting a conversion harness i joined the wires from the d16y7 wires to the correct wires of the d16z6 and i got the obd1 ecu connectors so im using the p28 ecu the the car wont start, i get fuel up and spark but wont start
any ideas