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      01-20-2011, 11:56 PM   #155
anthoj
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Drives: 2011 E92 335i AW
Join Date: Jan 2010
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Quote:
Originally Posted by intensee92 View Post
Question, so once you take out the charcoal filter right, did you all just replace the charcoal filter with a K&N filter and leave the other air filter in...? (two filters)

Or remove the charcoal filter and replace the air filter with a K&N one. (one filter)
I too am wondering about this. My K&N arrives tomorrow. I am impatiently waiting to install it. What is the advantage/disadvantage of the charcoal filter?

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