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Catalytic Converter - Dealer or Aftermarket?
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porsche4life
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Join Date: Jul 2007
Posts: 29,791
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1986 Porsche 944 2.5l
If the cat truly is bad, it could be indicative of other issues. My truck had been running lean for about a year with the PO, so the cats were smoked. But yes, replace O2 sensors before buying cats.
07-15-2015, 12:11 PM
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