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Re: Aftermarket Catalytic converters
Posted to Technical Discussion Forum on 4/6/2011 6 Replies

Passing an OBD2 test is not a requirement for 49 state aftermarket catalysts. CARB certified cats are required to pass an OBD2 test. O.E. cats will pass an OBD2 test.

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Personally I wish aftermarket catalysts were illegal. In many cases it woul... Login to read more.

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