Sorry,I meant an ecu specific to your engine,ie OBD1 AUDM? B16A,but its gonna be hard to find anything other than a crx ecu,no such thing as an aussie b16a OBD1 civic.

Wait for some cleverer types to come on & see if u can keep driving it,but if its spitting codes that dont exist,then who knows the extent to which it is working correctly.

Just take it down the nearest Honda dealer,they will most likely have a workin ecu on hand & can quickly do a swap to see what the prob really is before buying ecu's.

Try posting a wanted to borrow,gotta be some OBD1 ecu's cruising nearby somewhere.