Quote:
Originally Posted by jklamerus328xi
I do like K&N filters. I've had them in all other cars I've owned. I may put it in eventually. As far as the removal of the charcoal filter, I'm assuming it's for better air flow. Several on this forum have done it and recommended it. I'm a bit apprehensive. I don't know if BMW is simply being over protective of their engine by putting it in and it's not really necessary or if the engine does in fact need that extra filtration.
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PERSONALLY, I couldn't tell a difference with the K&N OR the charcoal delete, It makes sense that more air flow would occur because the charcoal seems very restrictive, I just didnt notice anything. IMO im going with placebo affect, but thats been very debatable on here for awhile. Like I said just my opinion.