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Over from the E30 board :K&N air filters (archive)
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Posted by Colin Walsh on November 07, 2001 at 14:53:42:

Whats the general consensus about the efficiency of K&N air filters, as far as their ability to filter out dirt particles properly. I have read that due to their increased air flow they permit more dirt into the motor and can seriously impact long term reliability. I'm curious as to what you guys think.


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