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Corvette o2 sensors

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Old Apr 16, 2007 | 07:32 PM
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Default Corvette o2 sensors

I installed the rear Corvette o2 sensors on my 99 Z28 with MAC mid length headers. It also has MAC cat back exhaust. I just passed the emissions with this set up and regular o2 sensors. But in the last week or two I started getting the PO430 code, followed by PO420 and PO430 at the same time about a week ago. I bought new regular o2 sensors and the light came back on, so I decided to go with the Corvette ones. I drive about 100 miles a day and so far so good, I've had them on for three days but I was wondering if they would pass the emissions inspection. I don't need to worry about it for two years, but I'm just wondering if anyone else has had the car inspected with the Corvette o2s and passed emissions. Thanks in advance.
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Old Apr 17, 2007 | 07:53 AM
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P0420 and P0430 are codes the rear O2's would set off, they are cat converter low efficiency codes.
The corvette rear O2's that everyone typically uses get installed in the front position on f-bodies.
Where did you install them?
You need to have the vette O2's in the front, and either none in the rear with the codes deleted, or cat converters with stock type fuctioning rear O2's.
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Old Apr 17, 2007 | 07:59 AM
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In CT if you have a SES light you will fail.
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Old Apr 18, 2007 | 12:08 AM
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Need to get O2 sims, or have the code deleted with a tune.
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Old Apr 18, 2007 | 01:22 AM
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i had the same problem but the code just went away by itself after a few days
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Old Apr 18, 2007 | 02:39 AM
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I just did cam/heads swap with LTs and ORY. I have O2 sims in the rear and vett O2s in the front and havent thrown a single code at all. But FL doesn't do inspections so..... doubt it would pass if I had to move to a state that did.
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