Zu11y, OR you can start with the Dinan Cold Air Intake and box, OR AFE Brand Cold Air Intake with shroud/box (much cheaper). Just make sure you buy the air filter that does NOT need to be oiled.

I believe the AFE Stage 1/2 have the shroud, but not metal cover, like the Dinan does, BUT when the bonnet is closed it acts as a cover as it will mate with the foam edges of the shroud to seal up and not allow warm engine bay air into the CAI.

read this thread,
http://www.xoutpost.com/bmw-sav-foru...endations.html

PS: you do NOT need to get the BMW software software modified either. You can just install the CAI and it will change the sound of your vehicle.

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S