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My bank 2 cat is nearing the end of its life and it occasionally throws a CEL with accompanying code. Because I was facing a smog these this coming summer, I done some homework.
First, every SF Bay area smog test station I took the car to told me the same thing. CA is very serious about shops doing complete tests. This meant hooking the computer up to the diagnostic computer to check various systems.
Second, every shop insisted on that they perform a visual inspection of the top of the engine and the exhaust system. They also said that all monitoring systems must have ready status except the EVAP system.
I plan to replace the Bank 2 header with integral cat soon. The question I asked above, perhaps poorly, is: are all Porsche OEM header / catalytic converter parts CA legal or does Porsche sell one of CA and another part for the rest of the US.
BTW: my cheap tester cleared the CEL light, but didn't clear the stored code. The Durametric took care of that.
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