Try this next time

I oil only the inner foam filter leaving the outer wrap dry as well as the outerwear...this deflects instead of attracting

 

I agree with you AGAIN.... Exactly why K&N is great for sand and foam is great for dirty and dusty conditions.

 

for sand you need to go witha k&n for sand and a foam filter for silty dust. the particles in sand are bigger and the k&n pics them up and stays clear for air but use an outerwear.

 

How much sand gets on a foam filter in a closed airbox? It's been a while since I've been to the dunes, and am considering forking over a couple hundred bucks for K&N's with outerwears for both my quads, but am wondering if it is really necessary.

Most of my riding is on silt, out in the desert, which it sounds like my stock foam filter is actually better at filtering. I'm planning on making two, week-long dune trips this summer though, and want to make sure I'm protected...

Since I have the lid on both airboxes, I can't see too much sand getting in there...dust flies around, so I can see it getting sucked in, but sand is heavy, and without a direct path from the tires to the filter, I can't imagine the filter getting too sandy...what do you guys think?

 

K&N hands down. but you may need to rejet after installing a K&N. MASS air flow man.....

 

My ride coughed and backfired when starting it warm at the dunes about a year ago, the foam filter caught FIRE.I switched to K&N they don't ignite as easy.Oddly enough it hasn't backfired while starting again.

 

Foam filters like the Uni or Twin Air filter are MUCH better at filtering the very small particles like dust and silt. They are recommended for any riding where you may encounter much dust and/or fine dirt particles. An Outerwears will help keep them cleaner, reduce cleaning intervals, and keep sand and dirt particles from getting embedded into the foam.

K+N filters flow more air. If you are after MAX power, at the expense of some filtering capability, go with the K+N. They filter large particles fine, but finer dust can find its way through. Occasionally a paritcle of sand can also find its way through. Using an Outerwears will prevent the larger particles (sand, dirt) from making their way to the filter.

If you do all your riding in the sand you will be fine with a K+N coverd by an Outerwears.

RR1

 

no problem with k@n here but for dusty sand areas the foam would be a better choice.

 

Thanks for the info, but nobody has actually answered my questions:
1) How much sand is going to get into a closed air box?
2) Is it worth spending $180-$200 to get K&N's for both wheelers, just for going to the dunes, or should I just stick with my stock foam, since that is what I will use MOST of the time?

Also, how much more sand would get in my airbox if I take the lid off?

Has anyone had any problems with sand working it's way through the foam over time? Even after cleaning the filter, it seems like you couldn't get ALL the sand out...

 

go with the ESR intake $65 +$10 outerware, and take off the airbox. The best airfilter