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long tube headers on a manual c6 gs


Old 04-15-2018, 09:29 PM
Arturo Bencosme
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Default long tube headers on a manual c6 gs

hello everyone, ive bought a pair of long tube headers for my GS and noticed that they only bring 1 bung each for the o2 sensors. the stock ones bring an upper and a lower. can someone enlighten me on what to do here?
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Old 04-15-2018, 09:52 PM
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The sensor before the cat (between cat and engine) controls the air/fuel mixture, the one after the cat is just to check that your cat is still functioning. Most people who run headers don't run a cat so they don't use the downstream sensor. They have their PCM tuner remove the fault code. If you do run a cat after your header, you will need an extension harness to get the second sensor to reach.
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Old 04-15-2018, 10:55 PM
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to add to this, the 2nd o2 sensor bung will be made into the xpipe that comes with your headers
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