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Downpipe for '04 S40 1.9T CEL question.

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FixXxer6
Posts: 48
Joined: 30 September 2013
Year and Model: 2004 S40 1.9T
Location: SoJack, MS 'MERICA!!!...yep...said it.

Downpipe for '04 S40 1.9T CEL question.

Post by FixXxer6 »

If I swap out the factory downpipe with an aftermarket downpipe without the catalytic converter, will it throw a CEL code due to one of the o2 sensors being after-cat? I've removed the cats before on a G35 coupe that I had before I totaled it and I had to use the spark plug non-fouler trick, which worked. Would this apply to Volvos?
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