ok, im picking up a 91 hatch dx this weekend....and im not too trustworthy of the motor so i want to swap my d16y7 into it (the y7 is converted to 0bd1 so its not obd2 anymore) what would i have to do to make my motor work in his obd0 car.......just swap out the dizzy and injectors......or i guess i can just run my 450's with my safc.....but what else, anything? my ecu of course, or no

 

OBD0-OBDI harness.

 

Try again. :P

If you have a dx, you're gonna need to do the mpfi swap, then put the whole y7 motor into the car, and put all of the sensors from your original motor into the new motor. Obd0 only needs to read the given sensors that it has, so if your motor has 120 sensors, and your obd0 wiring harness and ecu only want 5 sensors, than plug those in and your car will be singing cumbuya.
Not sure if your distributor will bolt up to the y7 head, but this is hmt, so I'm sure you'll figure something out. My y8 into my 89 hf was cake. I had one temp. sensor looking thing that originally plugged into the hf intake manifold that there wasn't a spot for on the y8 intake manifold, so I left it unplugged and my car didn't give a ----.

 

Ah DX right

 

ok so i just got back from the cities getting my car.....it IS a dx so yes im going to have to do the swap......what he did was he gave me an ls wire harness too....what ecu do i use? i beleive im using a p05 with my d16y7, could i also use that in this? or what.....its a 90 hatch dx.......does anyone have any helpful links they can post on how to do the mpfi swap (im going to take a look in the faq's here in a sec for some....) thanks

 

P05 is an OBD1 ECU and it is ----. It cuts out at 5500. If you want to run an OBD1 ECU you need to buy a conversion harness and an OBD1 distributor. You want a P06 ECU.

Here is a good link to the DPFI-MPFI swap:
http://www.fourthgenhatch.com/mpfi.html
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