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08-29-2014, 10:10 AM
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Where does wideband O2 sensor go?
What's up guys,
I'm in the process of installing a Vortech S/C in my BRZ and have purchased an AEM wideband O2 sensor with failsafe. Do I have to weld in a separate bung for the wideband sensor, and if so, where should I put it (running a Tomei EL header and Perrin 2.5" overpipe)? Or, does it replace an existing sensor? Thanks in advance for the help!
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08-29-2014, 10:44 AM
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Mr. Cranky Pants
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There's probably a way to put it in place of the rear O2 sensor and disable that second O2 in the ECU, someone in the software/tuning sub forum might be able to help you with that.
You could also add a bung for it, the overpipe would be a good place for it in my mind... |
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08-29-2014, 10:45 AM
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If you're supercharged, you'll be running a custom tune so I'm assuming the secondary o2 sensor will be disabled. I'm pretty sure you can remove it and replace it with your sideband without getting a CEL. The secondary o2 sensor serves no purpose other than confirming if your catalytic converter is working.
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08-29-2014, 11:10 AM
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You want the wideband before the cat, not after.
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08-29-2014, 11:24 AM
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OP has a Tomei EL header, he doesn't have a primary cat.
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08-29-2014, 11:26 AM
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Missed that part. It should be at least 18" from the exhaust ports. AEM widebands come with instructions with some more details regarding placement.
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08-29-2014, 12:36 PM
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You want it before any cat and as close to the merge point of the header as possible. If on a turbo car, you want it on the downpipe at least 18" from the turbo.
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08-29-2014, 02:57 PM
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I have a separate bung welded to my overpipe pointing up near the battery for the wideband. It is a very accessible location and I can remove/reinstall the sensor or a plug without removing anything else from the car.
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08-29-2014, 03:16 PM
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Fantastic. Thanks for the help, guys!
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