It works as it is designed to (well... it's a bent plastic tube) but should I do it again, I would buy one with the intake in line or slightly higher than the roof.
When I drive with the passenger side window open, I get a bit of engine growling and sucking noise from the inlet.
That was a unwanted side effect.
I have the Mantec raised air intake on my LR Discovery and it has the same noise, and it is located at the roofline. I think most will do this, I am not sure on the mushroom/pre-filter style ones though. That is if that is the reason why you would get one with the intake raised higher.
I just spend a little time looking thru the german forums and found this thread.
http://www.viermalvier.de/ubb_portal/ubbthreads.php/topics/371116/1
The various G pictures don't need any translating