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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Ultimate racing Cai discussion.



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      09-16-2008, 05:05 PM   #617
wrh3
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I installed a new filter on the UR CAI today, an aFe oiled filter (P/N 24-30508, 3"F x 5"B x 3-1/2"T x 8"H). A few weeks ago I had installed an aFe ProDry S (P/N 21-30003) that was an inch shorter according to spec but really is just a little smaller than the one I replaced it with today. I decided to try the oiled filter since it is supposed to flow better and use the ProDry S as my backup when the other filter is out being cleaned
It doesn't cause any issues with the fender liner installation and will provide more surface area than the K&N.

Why aFe over K&N? http://www.billswebspace.com/AirFilterTest.htm

Comparison of aFe dry vs oiled filters:


Here are some pics:




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Last edited by wrh3; 09-16-2008 at 05:36 PM..
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      09-16-2008, 05:27 PM   #618
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^^^^^, that looks good.
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      09-16-2008, 08:42 PM   #619
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Quote:
Originally Posted by wrh3 View Post
I installed a new filter on the UR CAI today, an aFe oiled filter (P/N 24-30508, 3"F x 5"B x 3-1/2"T x 8"H). ......

Why aFe over K&N? http://www.billswebspace.com/AirFilterTest.htm

Comparison of aFe dry vs oiled filters:

lots of great info...thanks
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      10-02-2008, 11:11 PM   #620
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