I searched and couldn't find exactly what I wanted. My question is what O2 sensor do I need to get for a OBD-0 ecu? Is it a 4 wire or 1 wire? and does brand really matter? I have a 90 hatch with a b18 bottom end, dc 4-2-1 header, and spoon pr3 ecu. if that helps any.

 

1 wire y0!

88-91 CRX Si.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. S &raquo;</TD></TR><TR><TD CLASS="quote">1 wire y0!

88-91 CRX Si.</TD></TR></TABLE>

Right! OBD1 is the 4 wire O2.

 

yeah its technically 1 wire. however, i use 4 wires b/c they are heated and i cant keep my 1 wires hot enough. 4 wires rock regardless of obdX

 

Try this site for the conversion to 4 wire!

http://ludicrous2_0.tripod.com/how_to/oxy/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90Hatch &raquo;</TD></TR><TR><TD CLASS="quote">I searched and couldn't find exactly what I wanted. My question is what O2 sensor do I need to get for a OBD-0 ecu? Is it a 4 wire or 1 wire? and does brand really matter? I have a 90 hatch with a b18 bottom end, dc 4-2-1 header, and spoon pr3 ecu. if that helps any. </TD></TR></TABLE>

You have a Spoon PWO ecu. Brand doesnt really matter, I think I remember hearing someone say that you can get them from autozone or places like that. the 1 wire universal bosch one or something or other.