Basically what I was going to say about reusable filters. In the automotive world they improve airflow at the detriment of poor filtering but in most all dyno tests the K&N didn't to an appreciable improvement in power ( you will never notice it).
Stick with traditional filters. If you want high filtering capability install a very large pocket filter assembly. Very good filtration, filters last a long time and they arent really expensive when you compare price to lifespan.
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