Quote:
Originally Posted by rorkor
I put an K&N in my wifes 325Ci 6 years ago, have re oiled it twice and she has put about 70k miles on it. No problems, no worries, just clean environmentally friendly reuseable filter.
That said, anyone that is afraid of maintaining a filter or having a greater responsibility to their cars maintenance should just let a dealer or lube joint swap dry filters.
I have a K&N for my E90 LCI sitting in the box right now, and when I get done typing, I am going to drop it in the car.
What is the prospective gain of removing the charcoal filter other than airflow?
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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.