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Originally Posted by dremd
Well, let me shock you (it surprised me at first)
Dirt is a Great filter!
In fact it catches dirt better than most things. Don't believe me? Check out K&N's literature, they state that their filters filter best with about 1/4" of debris build up.
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Sure, but dirt is abrasive.... If the dirt is enlarging the holes in the filter media - is tapping it out necessarily a good thing?
This is an intriguing question... If we're empirically denouncing the k&n design - we should, at the very least, empirically test our own practices. Sure, the replaceable filter doesn't filter well - but that's not evidence that a 60K mile paper element does
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That's a lot of debris!!!
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It's not much (typically)
We're talking a tiny bit of dirt stuck in the corners