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The prettiest test subject of the day, this Magnaflow ceramic-core catalytic converter came dressed in this shiny stainless-steel jacket. And it has the bite to back up its visual bark, netting our Civic an additional 4hp over the stocker. While able to withstand less heat than the metallic cat, it's less expensive and may suffice for some naturally aspirated engines that run relatively lean AFRs. View Related Article
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