Quote:
Originally Posted by BardG
What does this do?
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Allows for better engine breathing.
If you're not going to get a 'cold air intake', this is one of the next best things for your intake.
I bet it even provides a few extra ponies, but since there is no profit involved, you won't see any test done of before and after, IMO.
Here's a picture of what it looks like:
https://g80.bimmerpost.com/forums/sh....php?t=1892855
Note: Read the post from "tom @ eas", third from the bottom as well.