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Understanding Catalytic Converters
I'm trying learn more about the catalytic converters on our cars, and have a few questions.
Why are there 2 on each bank? Does the integrated cat function the same as the downstream cat?
Why is the integrated cat called the precat, even though it's the one monitored by the O2 sensors? Why have two but only monitor one?
Since they don't do the sniff test anymore, the downstream cat shouldn't make a much of a difference in terms of getting tested, right?
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