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      10-11-2012, 12:39 PM   #19
///M3THOD
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Drives: '14 F10 M5 CP
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Quote:
Originally Posted by WW08M3vrom View Post
Since I got a few responses what about a k & n drop in filter - I have an early e90 - have read a few post that it has a more restrictive coal lined filter...any opinions
Coal lined?

I think your referencing the AMG camp and the charcoal filters on M156/63 series vehicles. I've done it on my car.