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Old 06-10-2011, 01:49 PM   #1
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03 exhaust headers

what should i do with the post cat o2s after header install? thanks for any info
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Old 06-10-2011, 05:29 PM   #2
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Originally Posted by 03silverbox
what should i do with the post cat o2s after header install? thanks for any info
Are you referring to the pre-cats, or the secondary cats ?
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Old 06-11-2011, 04:44 AM   #3
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Are you referring to the pre-cats, or the secondary cats ?
the headers delete the primary cats,by instaling the primary o2son the headers should i extend the secondary o2s past the secondary cats thanks jd
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Old 06-11-2011, 08:15 AM   #4
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Originally Posted by 03silverbox
the headers delete the primary cats,by instaling the primary o2son the headers should i extend the secondary o2s past the secondary cats thanks jd

If you're deleting the pre-cats you'll have to extend the 02 sensors to the secondary cats .
However, from a performance perspective, you'll discover that there's little to no gain in performance by reconfiguring your exhaust this way .
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