Should I install the K&N filter?
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My friend is giving me his new K&N filter from his 325xi E90 with a N52 engine. He decided he did not want to install it lol. So should I bother installing it? I am planning to do the charcoal delete and install RPI scoops.
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My Ride: 2006 BMW 550i
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personally i wouldnt. i've used the k&n before on other vehicles, and never noticed a difference. plus the oil from the k&n filter may get on the maf sensor, and give false readings. i'd just take out the charcoal filter and make sure you have a clean paper filter.
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My Ride: 2004 530i
premium package/active steering/auto sunshade/tiag/black dakota leather/logic 7
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I also use one and I noticed that I get slightly better gas mileage. If you plan to get the RPI scoop the K&N will match nicely as it is fairly similar to the bmc filter that rpi recommends.
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My Ride: 2008 535Xi
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Free upgrade that takes no more then 2 mins to DIY. Stop typing and put it in.
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My Ride: 2010 535i M Sport 6MT
Model Year: 2010
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My K&N engine air filter works nicely with my Borla cat-back system. Adds a little air intake sound level too at WOT. Oil the filter media every couple of month and a little each time, wash once a year and you should be fine. Over-oiling at any time will cause MAF sensor issue. I have a GM vehicle at 11 years and 146,000 miles with Mobil 1 and K&N engine air filter with zero engine issues. My E60 has the K&N air filter for almost 40,000 miles.
However, if one drives in a dusty or sandy area, a K&N air filter is probably not a good idea.
However, if one drives in a dusty or sandy area, a K&N air filter is probably not a good idea.
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