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Message: <blockquote data-quote="UselessPickles" data-source="post: 557558" data-attributes="member: 3256">Ceramic coating keeps the heat of the exhaust inside the pipe instead of letting the heat radiate out of the pipe and onto the engine. There's claims out there of ceramic coating of headers (naturally aspirated) creating up to 3% performance gains. It's unknown whether it would cause a measurable gain on the FJR, but it's nice to think that it might contribute to the final amount of power that I get out of the setup.The more practical benefits are the protective coating preventing corrosion, it looks all nice and shiny and won't turn blue, and it won't radiate heat on my ankles at red lights.</blockquote>