Originally Posted by bimmerjph
I was looking at the older pictures of the F80 and it appears that the camo would have been thick enough to hide the bulge. This makes me think that it has been there since the beginning. So even if it isn't an extractor it could still be functional.
Agreed. Looked myself and there seems to have been an extra camo lid which has simply been removed to reveal this.
There is a big gap between this 'extra' bonnet and the windscreen so maybe all the 'functional' testing of the vent has been completed?