S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

piggie pipes???

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10-19-2002, 07:06 AM

#1

Blurrr

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piggie pipes???

Question on piggie pipes. What would happen if you don't move the O2 sensor down father on the pre-cats and just gut the pre-cats???

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10-19-2002, 07:08 AM

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ed@4induktion.com

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i think you would be throwing a check engine light

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Old

10-19-2002, 07:25 AM

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Auto Union Jack

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Just gut the pre cats, leave the primary sensors in place, and lengthen the wire on the 2nd sensors

to move them to be after the main cats. Simple with no CEL.

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06-09-2005 06:16 PM

do piggie pipes turn on the check engine light?

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03-22-2005 07:47 AM

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09-19-2004 03:09 PM

Question For those of you with piggie pipes?

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04-11-2004 08:33 AM

clarification: piggie pipes, relocate second O2 sensor to just behind cats after gutting

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