2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

second O2?

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Old 07-28-2007, 02:00 PM
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second O2?

I was wonderin if anyone knew anything about the second O2 sensor. I picked up a DP last night and right now i cant install it or i have to welid a second O2 hook up in to it.
Old 07-28-2007, 02:25 PM
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it does not have the o2 bung built in?

what downpipe is this?

Last edited by chevysalesman614; 07-28-2007 at 02:25 PM. Reason: Automerged Doublepost
Old 07-28-2007, 02:41 PM
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Originally Posted by chevysalesman614
it does not have the o2 bung built in?

what downpipe is this?
i was the seller, it's a 2.5" cobalt addiction dp w/hi flow. When i was taking a look at his car, i noticed that there was the 2nd o2 bung, BEFORE the cat. It still has the normal one after the cat as well.

His car is an 07, with the sai. I have never heard of this 2nd o2 sensor in the cobalt or g5 before last night.

and just for the record before anyone calls me a dick for selling a bum part, i did explain that something would have to be fabbed up before it would work properly.
Old 07-28-2007, 03:07 PM
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just get another o2 bung welded in.
and get a 18mm? bolt to plug up the second hole that you wont use
Old 07-28-2007, 03:09 PM
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Originally Posted by elvisc
just get another o2 bung welded in.
and get a 18mm? bolt to plug up the second hole that you wont use
just from looking at it, i'm not sure that there was enough room on the dp to weld a 2nd bung. I think he said he was going to just try to delete the whole sai, whcih i'm guessing would get rid of the o2 sensor as well.
Old 07-28-2007, 03:12 PM
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oh. good luck with that.. sounds like a pain in the ass. but hey, thats modding
Old 07-28-2007, 11:56 PM
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yeh i am most likey goin to weld one in but i was wounderin if any1 knows any info on it and y is there two of them
Old 07-29-2007, 12:01 AM
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Originally Posted by G5kidd
yeh i am most likey goin to weld one in but i was wounderin if any1 knows any info on it and y is there two of them
the second one is to run a wideband I assume,I just put a bolt in mine.




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