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I bought my car with a foam air filter and run foam air filters on all my motorcycles, I used to use K&N filters on my motorcycles but they left way to much grit in the carburetor, so I made my own foam filters with bulk air filter foam from a motorcycle parts store, I use the same high tack filter oil as the K&N filters call for, my carburetor stays clean, my performance is the same as with the K&N and better then it was with the paper filter, for my car I keep a spare paper filter on hand so I can drop it in while I wash the foam filter.
I know that last time I checked amsoil was selling dry "microfiber" air filters, that they claimed caught more dirt then paper or K&N filters, and had as good if not better air flow to K&N filters, and apparently you blow them clean with compressed air, but they don't make one for the VX last I checked.
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