update.
I installed the Dinan CAI successfully finally and covered up a few holes the metal plate has for a pre-facelift model (that I don't need for my facelift model) and I have to say, the car sounds differently now for sure when under heavy acceleration (I have the 4.8iS exhaust on my 4.4i) and I can't believe now much.
I'm on the fence if I like it better. It growls a bit more like an american vehicle now than what the 4.8iS normally rumbles like...
I am trying not to say this next comment as I worry it may be in my head but it DOES certainly feel like I am getting more power (umpfff) when at 3k rpm and more too tho. No idea on fuel milage as I have a heavy right foot.
overall it was worth the $250 CAD I paid for this but I'd probably not buy it if it cost more than that as I am NOT putting the Dinan exhaust or Throttle body and software on either. too expensive

a wish for this Dinan shielded plates tho... the factory air cowl and flexible arm that went to the factory air box are no longer beneficial to the air intake system, when you install this Dinan CAI set-up. I wish the Dinan's side shield/plate had a hole cut in it to accept the cowl's flexible arm tho. The air flowing into the cowl now just enters the engine bay (hopefully cooling down the engine bay). It seems like a lost air supply for the Dinan CAI to utilize as the only air the Dinan CAI now gets is anything that sneaks into the "box" from behind the right side light and from what I can see there is not a lot of open holes to allow cool air to quickly enter this air "box" therefore having this cowl's arm supplying air would be sensational way to ensure cooler air was entering and at a quicker flow rate too.
The AFE Stage 1 kit for the V8 has the benefit of using air from the air cowl. See pic.
Since on the side of the Dinan air box, there is a gap/hole/missing metal chunk at the top, I am thinking a nice small "deflector" could be made up and attached to the Dinan air box to accept the air cowl's flow.

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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