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high flow cats or O/R?


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So I've decided i'm going to pick up a set of the Dynatech longtube headers and was trying to decide if i should get the X pipe with high flow cats or just ditch them and go with the offroad X pipe. I'm in Cali and I know the headers themselves are not smog legal here so is there any reason I should even bother with the cats? If I find a smog tech that doesn't notice my mods would the high flow cats reduce emissions enough that it would still pass the sniffer test?

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