New Headers/Rear O2's (Plug/SIM/Extend)

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Jan 8, 2011 | 05:16 PM

Superjoe

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New Headers/Rear O2's (Plug/SIM/Extend)

I'm throwing new headers in soon. What's the best solution for the rear O2's? I will be running CATS. Should I just plug them and tune them out? I thought I was mostly seeing people extend them and run all 4 still.

Obviously I'll be getting a tune afterwards.

http://www.amazon.com/1980-2006-Corv.../dp/B001RK1NJY

This is the only plug that I can find online. Although my car is an '08 I'm sure it's not going to matter. Doubt GM has changed O2 sensors in a long time.

Any input would be appreciated, thanks!

Jan 8, 2011 | 05:38 PM

JayplaySS2

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I ditched the rears and plugged them so no need for the additional wiring. Without cats the rears are useless.

http://cgi.ebay.com/ebaymotors/O2-Ox...item4cefcb161e

Jan 8, 2011 | 05:43 PM

Superjoe

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But I will be running CATS, so I'm wondering if there is still some efficiency and cleanliness to be gained from running the rears

Jan 8, 2011 | 05:49 PM

Motorhead-47

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Plug them and tune them out. Once you've removed the factory cats the rear o2s serve no purpose othe than to plug the bungs.

Jan 8, 2011 | 06:08 PM

fastskyline

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From: Atlanta

all the rear sensors do is monitor the efficiency of the cats. thats it nothing else. they are only there to let you know about a problem with the cats. the front sensors are the ones that help with fuel mixtures. plug the rear holes, tune them out and ditch all the extra wiring.