K & N E-2877 air filter

[psilosin]

I am not the only one to notice this. I did some reading when originally purchasing the K&N and a couple threads on aussie forums noted similar results which is why I decided to check. A few weeks ago I drove about 100kms of dusty gravel and after removing the K&n I could wipe my finger through the dust after the filter... not a good thing. I also noticed some etching (right word?) on the turbo fins, so probably from dust since I've installed it. (this spring)

Since then I always switch to paper filter for camping/offroad and now no dust post filter..

I would tend to agree with Pajerry's advice on using K&N for the street, paper for the offroad.

I have read a number of reviews and tests that all indicate that K&N filters do allow more and larger particles past than most standard paper filters (and also a lot more air...) so there is a trade off to be aware of.

K&N themselves markets a line of extra defence products for dusty conditions because of this.
http://www.knfilters.com/search/wrap.aspx

[davidwwc]

Thanks everyone for the information. I am glad that I started the post. So far I am happy with the K&N filter . It is well worth the $50.00 bucks and being reusable ,it is amazing. I believe the oiling does a lot of wonders to keeping the dirt out. As all filters will be affect by the driving environment ,I will check visually more often by just undoing a few clips.

Cheers,
DC