Interesting, we sell UNI foam filters at work for all the off road buggies and race cars. They do a much better job of trapping dirt and crap then a K&N ever has. We used to sell the guaze filters but not any more. Cars with the K&N filters would be lucky to run a weekend without clogged jets or crap somewhere in the carb. Since selling UNI filters to all the off road guys, we have much less complaints about clogged carbs. Foam filters are also OE for pretty much all dirt bikes and ATVs, not gauze. Given the choice I would stick with the foam over K&N. A giant paper filter would be best though...
Jason
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