hello i just bought a 1990 hatch dx it had the multiport 1.5. when i purchased the car it has the d16y7 motor in it bolted down with a si tranny it has no intake manifold and just has the dx wiring harness laying in the engine bay now i was thinking i have a 94 obd1 wiring harness from a integ and i wanted to know if i buy a d16z6 im and use the obd1 wiring would this work? i noticed the connectors on the obd1 do not plug in the obd0 plugs what should i do to make it run right any help would be great thanks

 

you need to use the DX engine harness and do the DPFI to MPFI wiring changes - use a D16A6 intake manifold, distributor and ECU

 

so i would just keep it obd0 and just get the wiring from a a6 right will that just plug in or do i have to modify please any help would be nice i need like a hole parts list for the motor to work anything would be nice thanks

 

Need to modify your DX harness - since your main (underdash) harness is still DX , and SI engine harness won't plug into it.

Once you have modified the harness for MPFI, you can have a choice of running the car in OBD0 or OBD1. For OBD1 you'd need to swap some grey plugs onto your engine harness, and get an ecu adapter harness to be able to run an OBD1 ECU.