Exhaust: Which Would You Do?

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There is also the possibility of sending in the housings and having the catalytic converters replaced with 200 cpi. That would be my plan A. The used ones have the decisive risk that they are defective or otherwise unusable. For $700 the risk would be too high for me. With the non-oem ones it would have to be clarified which cell density is installed. I do not know if 200 cpi throws a CEL on the boxster, but that would be Plan B.