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Old 06-14-2011, 03:48 PM   #2
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Join Date: Aug 2005
Location: Sanford NC
Posts: 2,389
What are the specific codes?

What are needed are the specific Pnnnn codes so the books can be looked at and suggestions given.

Also is the car completely stock? No aftermarket parts or "improved" ones? Were the O2 sensors the exact parts for the model year? Porsche parts? Bosche? Part numbers? The cats you replaced came from Porsche or from ?
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