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Old Sep 5, 2008 | 02:35 PM
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From: Sachse TX
Default Rear 02 Question

I just put my vette back to stock ('99 FRC). I had headers and no cats on it before. My friend gave me a stock exhaust with rear O2's, but the connectors aren't long enough. I can't remember if they used to have extensions or if I have front O2 sensors in the rear and the rear ones are supposed to have longer wires? Can someone fill me in?

Also, the ones I have in the rear are a different connector type (flat when the harness is the square type).
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Old Sep 5, 2008 | 03:27 PM
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Flat connector is the front one. A lot of headers swap the rear to the front so it will reach the new bung location. So, swap them...
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Old Sep 5, 2008 | 04:02 PM
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I have front O2's in the front, and front 02's in the rear. Not sure how swapping them will change anything?
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Old Sep 5, 2008 | 04:05 PM
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Originally Posted by FreakC
I just put my vette back to stock ('99 FRC). I had headers and no cats on it before. My friend gave me a stock exhaust with rear O2's, but the connectors aren't long enough. I can't remember if they used to have extensions or if I have front O2 sensors in the rear and the rear ones are supposed to have longer wires? Can someone fill me in?

Also, the ones I have in the rear are a different connector type (flat when the harness is the square type).
What year was your friends stock exhaust? I thought they switched the connector in 02 or 03, not positive though.Might want to post in tech section for more responses
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Old Sep 5, 2008 | 08:46 PM
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Hmmm. I have bolts where the rear 02's used to be...


Strange.
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