Are K&N air filters any good?
#1
12-12-2004, 11:39 PM
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#2
12-13-2004, 12:15 AM
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Some like them, some don't. Personally, I would not put one on my engine. The Donaldson paper filter I have (Tymar intake) filters at about 99.8% when clean and 99.9% when slightly dirty. The K&N filters at about 97% when clean and 99% when slightly dirty (numbers from their own website and other testing I've seen). That doesn't seem like much, but when clean the K&N is allowing 15 times more dust to pass, and when slightly dirty 10 times more. Not only that, there are several other intakes that offer [I]at least[/] the same airflow as the K&N. The most popular on FTE seem to be the Tymar and the Ford AIS, both of which flow a lot of air and also filter well.
#4
12-13-2004, 06:03 AM
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My replacement K&N went to the landfill last maintenance interval. I saw no improvements, went back to throw-aways (NAPA Gold). If I ever did find and use a good re-usable/cleanable type of filter again, I would buy a spare so that I could just pop the prepared one in and not have to wait for it to dry etc. Just my opinion.
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