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Originally Posted by RGRAY
What else do you have to go by?
There's a lot of good hearsay here.
It's got to increase air flow and I believe the article said the filter is not on European models.
I don't know if the charcoal filter is on the E90?
I have 2 questions:
1. Would this void the warranty?
2. Do you think your BMW dealer would do this for you?
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USA E90 has it
Euro E90 has a cylindrical paper filter and not a flat panel like USA one
1) Yes
2) No