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so I bought this car with the MANN filter, which has some weird soft stuff that actually helps prevent pollen and dust from entering air chamber. I just installed the K and N drop in air filter. I immediately see better results in performance and even gas mileage 3 mpg increase. Is there harm in using the K and N over the MANN that helps prevent more tiny particles from entering. Which is best to keep my car running smooth for the long run?

 

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SO the k n filter does let a lot of particles pass. This study did not include the MANN filter. You saying I should not use the K N filter anymore? I just bought it

 

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auto store only has the Purolator classic. Is this a good filter compared to other good filters? its only 15 bucks.

 

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and on that study the amsoil is the best. So is this the best filter amsoil? They have the best oil FYI

 

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walmart sells the FRAM filter is that any good? Im just trying to find a new airfilter that is good for my engine. Money dosent matter