I was wondering if the second generation CRX(88-91) came with an OBDI ECU or are they all OBDO.
And if they are OBDO, or say you drop an OBDI or II motor in it, what mods do you have to do to make it work properly.

Thanks.

 

All 88-91 Civic/CRX's are OBD-O. To place an OBD-I/II engine in it, you must convert to OBD-I to have it run properly. There are guides to doing this.

 

Thanks whodie.