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However you can have polished sharp edges, Seems to me polish is just more heat reflective, and that would likely be a small power boost, but only as long as it stayed reflective, wonder how long the dyno tests lasted that showed a boost.? What kinda of fuel, ie carbon/lead buildup? If coatings don't last why would polishing?



the coatings do last. they are a ceramic heat barrier, unlike simple polishing.

machine shop owner and engine builder