# k&n filter not the best?

**URL:** <https://forums.speedlife.net/t/k-n-filter-not-the-best/170821>\
**Category:** PittSpeed Off Topic\
**Created:** [December 3, 2004, 10:58pm UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821 "2004-12-03T22:58:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![vw16vcabby](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/vw16vcabby/32/5943_2.png) [@vw16vcabby](https://forums.speedlife.net/u/vw16vcabby)\
**Post date:** [December 3, 2004, 10:58pm UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821/1 "2004-12-03T22:58:43Z")

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[http://www.bolhuijo.com/airflowtest/](http://www.bolhuijo.com/airflowtest/)

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**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\
**Post date:** [December 4, 2004, 1:19am UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821/2 "2004-12-04T01:19:38Z")

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the K&N being reusable wins my vote, A few cunt hair CFMs isnt gonna discourage me from not buying one. they pay for themselves in the long run.

Oh wait he DIDNT once mention anything about CFMs :stick:  
It also helps on the enviroment too :grouphug:

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**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\
**Post date:** [December 4, 2004, 4:24am UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821/3 "2004-12-04T04:24:17Z")

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> [@SHAG](#):
>
> It also helps on the enviroment too :grouphug:

whitey would be proud

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**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\
**Post date:** [December 4, 2004, 5:02am UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821/4 "2004-12-04T05:02:39Z")

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I don’t understand using surface area as a comparator (in this guy’s test or even K&N’s claims). The air doesn’t just hit the surface and stop, it has to travel through the pleats. I would think the volume would make a difference on restriction. So it kind of matters on surface area AND thickness, wouldn’t it?

Doesn’t really affect the results though.

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**Author:** ![LigonierA1](https://avatars.discourse-cdn.com/v4/letter/l/fbc32d/32.png) [@LigonierA1](https://forums.speedlife.net/u/LigonierA1)\
**Post date:** [December 9, 2004, 11:49am UTC](https://forums.speedlife.net/t/k-n-filter-not-the-best/170821/5 "2004-12-09T11:49:07Z")

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Every motoX bike ever comes with foam filters…and they aren’t exactly low performance when you consider the power to weight or even just throw a leg over one…it could be because they’re just low cost for hte manufacturers, but I’d bet there’s a bit more to it.

I’ve heard it said that when the wind blows at Laguna Seca, that K&N filters let sand pull right through with obviously bad results. Dunno, that’s just repeating what I’ve heard from left coasters I know that do open track days there…

On the other hand, I’ve used alot of K&Ns over the years and have always been happy…