b18 o2 sensor

what sensor do i use on a 92 b18. casue the si one has one wire and the 92 has 4. will the one of a 90 or 91 have i wire.

it depends on what ECU you're using. If you're using the 90-91 OBD0 PR4 ECU, then use a 1 wire o2 sensor. if you're converting to OBD1 and using a 92-93 PR4 or newer LS ECU, you'll need to use a 4 wire.

cool thanks man