[Nugget]

Originally Posted by aus

Porsche GT3 front duct. Simple and probably effective. Can't be that hard to make.

DIY on a Cayanne: http://www.6speedonline.com/forums/c...ake-ducts.html

.

I saw the Porsche scoop recently which inspired me to bodge these up on my e36.
Seems to work and they even survived an offroading expedition to the sand trap.