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      06-02-2011, 01:23 PM   #18
kitw
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Drives: 2015 M4, Sakhir Orange
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Quote:
Originally Posted by dogears View Post
Question.

Why did BMW use a much more restrictive carbon impregnated filter in the US, but a higher flowing non carbon filter in the rest of the world and on their competition vehicles?
(and the 2010+ cars, which have the Euro filter)
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