fireant

I'm helping a friend figure out what we need to do get a Y5-Y8 Mini-me running in a CRX Si.

He has:

90 CRX Si OBD0 ECU and all Wiring, dead original motor

Y5 block + Y8 Head completely assembled
The motor was running previously in a 98 EX, but the ECU did not make it over, and we dont know if it was converted to OBD1 or not.

VAFC

We're trying to find out the following info:

Can the 90 Si ECU + VAFC work? if not, would a 92 Si ECU?
Are there any wiring changes that need to be done for the distributor and injectors?
What about the knock sensor?

LA_HONDAS

convert it to obd1 and use a 92-95 vtec ecu and obd1 or 2 dizzy
and the knock sensor is useless you dont need it thats all you gotta do

and it will run like a winner

fireant

Thanks!

We have a stock 92 Si ECU so it should be good to go.

Will we need to re-pin the OBD0 plug to fit the OBD1/2 Dizzy?

Should we be able to just bypass the resistor for the injectors?

LA_HONDAS

look in the faqs in the crx/ef civic forums

everything you need to is in there

LA_HONDAS

https://honda-tech.com/zerothread/1508680

here you go

fireant

Good Pinouts there. Thanks again.