Thread: K&N for 335d
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      09-05-2011, 08:41 AM   #16
cssnms
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Drives: 2011 BMW 335d
Join Date: Sep 2010
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Quote:
Originally Posted by Socom View Post
Honestly as a daily driver I've seen zero evidence where anything other than OEM was best.
This.

If there were anything to be gained by installing something as easy as a filter, cone or otherwise, one would think the car manufacturers would install them. They might make a car sound a little better but that's all that will be gained and at the sacrafice of allowing more dirt into the engine.
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