Originally posted by 1stGenCRXer
That is correct. Although the header didn't come with an O2 extension wire, it would be best to track down some shielded stuff. The O2 sensor readings are of the low voltage type, which makes it increasingly easy for interference to limit what the ECU sees correctly.
AwwwsChwa -- I'm having about the same problem you are, my stock O2 is shot, hell my car won't even idle. My O2 is way back where the cat would be on my setup and it fouls every time I drive the car. The reason is that it just can't stay heated that far back in the exhaust track........So here's the best thing I can recommend that you do. Convert to a 4-wire O2 sensor, they're self-heated and work just like the 1-wire versions.
Goto your local parts house and grab a 4-wire O2, just ask for one from any of the ODB-1/2 Honda's. I intend on using a 4-wire pigtail and splicing it into my stock harness. That way I can just swap 4-wire O2 sensors like it would be stock.
Here is where you can find a nice write up on the process.