S2000 Under The Hood S2000 Technical and Mechanical discussions.

K&N Filter tests

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Old 01-05-2009, 04:37 AM
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Most oil analysis labs will recommend that you use a paper filter instead of the oiled gauze type (K&N). They see the same phenomena as the original poster stated in the equipment tested, but on a much larger sampling. But, in all fairness to K&N, their type of filter doesn't really effectively start filtering dirt until the filter itself stats filling up with dirt. They even state this in their literature (instructions).

I do use a K&N air filter in my S2000, and I'm aware of the possible downside. I've done UOA's at 15K and 30K and have not seen elevated silicon levels or increased wear metals compared to other S2000 UOA's so far. But, if I ever do, the K&N comes off and the OEM goes back in.
Old 01-05-2009, 06:57 AM
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Originally Posted by tlee1234' date='Jan 5 2009, 02:00 AM
Interesting, sorry to bring back such an old post, what you guys think of this?

I was thinking of getting a k and n drop in filter for my stock intake, maybe I

should rethink?
Wow 9+ year bump. Gotta be a record haha.
Old 01-05-2009, 08:54 AM
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I'll never use K&N air filters again, I'm running Amsoil Ea filters, or paper
Old 01-05-2009, 10:36 AM
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Originally Posted by INDYMAC' date='Jan 5 2009, 03:37 PM
I do use a K&N air filter in my S2000, and I'm aware of the possible downside. I've done UOA's /snap...snap/ and have not seen elevated silicon levels or increased wear metals compared to other S2000 UOA's so far. But, if I ever do, the K&N comes off and the OEM goes back in.
Same here
Old 01-05-2009, 11:02 AM
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I remember seeing a test done on K&N filter as well as numerout other filters where they put a white cloth behind the filter to see if any dirt got past the filters.

K&N was worst and OEM was best, All other manufacturers came close to K&N in visibly dirty white cloth behind the filter element.
Old 01-05-2009, 11:59 AM
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K&N isn't the end-all/be-all of air filters. There are plenty of alternatives out there.

When in doubt, go OEM. Honda chose paper because it's cheap and filters well.
Old 01-05-2009, 04:33 PM
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AEM dryfilter is a good filter.
Old 01-05-2009, 05:18 PM
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Originally Posted by 2003s2k2003' date='Jan 5 2009, 07:57 AM
Wow 9+ year bump. Gotta be a record haha.
Old 01-05-2009, 05:22 PM
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fram has a 'dry' filter...made of synthetic fibers supposedly 'statically' attracts dirt..

any thoughts? i bought one cuz it was cheap before.. not for the S tho
Old 01-05-2009, 10:22 PM
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its understandable that most performance air filters do so by sacrificing some filtration for a little flow. Im sure if K and N filters were so bad they wouldnt be in business still.


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