I have all the parts I need, but want to use the DX ecu in my 91 hatch. I am unsure about the ecu wiring though. Would the wires go to the same functions in relation to the si ecu, on the dx ecu but just in another spot on the plug? If that be the case, where would I find a pin-out for that ecu? Thanks in advance.

 

Hmmm.. no idea what your talking about?

If you want to use your DX ecu then you must use the coresponding manifold. Mpfi uses 4 injectors where dpfi (dx) uses 2. you can't use the DX ecu on an Si engine - you'll never get the wiring to fit anyway.

Just swap intake manifolds and it should be ok.. nothing like the real thing though.

 

you cant use the stock dx ecu for a mpfi conversion...dx ecu is only designed to power two injectors...

 

Isn't anyone using the DX ecu for the mpfi swap? I'm sure I have seen this somewhere, but don't know how to wire it. HELP?

 

We need to figure this **** out Chrispatrick. I'm tired of driving all the way out to east bumblefuck. But does anybody know if an obd0 ls ecu will work for the time being? The wiring is complete except for the two wires running from 2nd and 4th cylinder injectors

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMH22HATCH &raquo;</TD></TR><TR><TD CLASS="quote">does anybody know if an obd0 ls ecu will work for the time being?</TD></TR></TABLE>

Yes it will work. I have a 91 PR4 LS ECU in my 91 CRX running a 96 B18B1 engine. It will plug into the cabin harness and the pinouts are the same as the PM6 Si ECU. Since I assume you will be running a D15B2 or equivalent with the ECU, it will run the motor rich but you should be fine until you can get a PM6.

 

Hell, that's perfect. Brandon, is your ecu the PR4 or some other? If it's different, that mean it might need to be re-pinned, but that's all right?