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Thread: K&N Air Filters
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post #6 of (permalink) Old 09-23-2013
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Originally Posted by winkosmosis View Post
They don't filter nearly as well as paper filters. I don't mean slightly worse, I mean 40x as much dirty gets through. That's because the pores are much bigger to allow less restriction even with a smaller surface area (due to fewer pleats). Googling will turn up some experiments that show just how bad they are.

Either stick with a quality paper filter in the stock airbox or buy the Ford Racing CAI which uses a disposable filter.

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That's just not true, just because it was on the internet doesn't make it true.

K&N filters filter just fine and filter better as they get dirty.

Whatever you read was probably planted by someone backed by a paper filter maker.

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