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Originally Posted by Warehouser
Funny, I got a text message from a tuner friend of mine yesterday showing the same exact thing. He thinks they may have dropped the ball on one of the intakes. They closed it up and said it made a world of difference in driveability.
Have not checked mine yet...
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This is appalling if it is production variability. You would think BMW could deliver a consistent product.
I'm hoping the block off plate is aftermarket like munit says. Also it is interesting that it raises performance. Would be good to verify this. Could be an easy mod for all of us.