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There are a number of things you can do to make the car pass the sniffer and not have any codes....
However if anyone does a visual and knows what the car came with before, it is a automatic fail.
As a past tester I am required to see and check that all 4 O2 sensors are there, as well as all 4 cats and if the cats were replaced in the past it must also have the proper tags to say they are legal in the state.
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Hybrid Mode
