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      10-07-2017, 01:52 AM   #57
rasa bmw
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Drives: 640d sport/f31 330d x drive
Join Date: Jul 2017
Location: northumberland

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nope,,a paper filter is way better at filtering,i posted a very good explanation to this a few weeks ago for someone who questioned me about facts of this.a foam filter is a little better at air flow,,but as has just been said..air flow is ample with standard air box.unless going silly silly power with new injectors/ic/turbo etc etc
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