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GiantStickMan

SR20 exhuast on CA18 - o2 Sensor?

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I'm currently in the process of putting a HKS super dragger exhaust from an SR20 S13 onto my CA18 S13.

I have a small issue though with the o2 sensor near the catalytic converter. The old one on my CA18 stock exhaust had a different plug (and was 4 wires i think?) but the one on the new exhaust is a different connector (and is 2 or 3 wires from memory?). Can i just cut and rewire onto the back of my old connector and if so which wires do i need to match up? Or does anyone know the part # etc for the CA18 sensor so I can order another one and replace it?

Thanks in advance!

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If its the plug i'm thinking of near (well it actually plugs into the cat) it's just a temp sensor. I'd plug the hole with a bolt and cut the sensor off.

Post up a pic before u go cutting it off just to be sure

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Sounds like the one, the connector is inside the car just under the passenger seat. Would there be any problems plugging the hole and not running one? Will post up a pic when I'm home.

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yeah fk it off man you dont really need it. it just informs you if your cat gets blocked up. unplug it and plug the hole up with a bolt. on your cluster a red light will come on to tell u that its not working, just ignore it or if you cbf pull the cluster out and take the light out.

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That is just the cat overheat sensor.

 

It's purpose is to warn in the event of a cat converter overheat which is caused by a buildup of carbon in the cat's honeycomb structure (which takes years and years of normal use or a really rich air fuel ratio)

 

If you've got a newish cat (ie: not the 20yo stock one) and a decent tune, you will never block the cat in the car's useable lifetime. You can leave the sensor disconnected.

Edited by SIR ASHMAN

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