Hey all, been searching around but can't seem to find a clear answer anywhere.
So i picked up a 91 LX sedan with a d15b2. Got some parts layin around from an old DOHC ZC i used to have in my hatch and was wondering what I can use to do a MPFI conversion in the sedan.

*Can I use the DOHC ZC Intake manifold/injectors on the d15?

*Can I use my existing distributor and modify for MPFI or do i need a d16a6 dizzy?

*Will the existing ECU (PM5?) work for the swap or should I use the PM7 (ZC) computer?

Other than that I've read up on the necessary wiring changes and I know I need an injector resistor box to make it work.

If anyone knows what other parts can be used from the DOHC ZC to make the MPFI swap work on the d15 it would be much appreciated.

 

1. Injectors yes, manifold no. Different flange pattern. Throttle body should work though along with IACV.

2. No. It's missing a sensor (CKP? I forget)

3. No. The DPFI ECU is designed to operate 2 fuel injectors.

 

dam thats beat, but at least i know what i need now. So i could probably get away with using a d16a6 I.M. and dizzy? Theoretically an a6 dizzy should already be set up for MPFI and not need modification correct? Also will the pm7 run the engine properly or do I need another? Thanks for the quick response!!

 

That's correct. Essentially, without getting into too much detail, doing a MPFI conversion is basically turning the DX/LX/etc into an Si engine without any increase in displacement. When doing it, an A6 dizzy is EXACTLY what you should get if staying pre OBD (OBD0). For the intake manifold it really doesn't matter which year as long as you're not getting one from a B6 or B8 (never heard of anyone doing it with a Y7 manifold so I can't say if those will work or not). The PM7 ECU should work, can't say it'll run flawlessly but it'll work.