I saw that same CAI in the latest edition of the Bavarian Autosport Spring/Summer Catalog. Its on their website too. They have the same claims listed.
Personally, I think the whole cold air intake stuff is crap. I have nothing to prove my distrust except my own distorted logic.
I have a 2002 330i with the Sport and Prem Packages. If you pop the hood, you can see where the factory air intake is: just above the twin kidney grill.
When you are moving down the road, the front of your car should receive the smoothest flow of air. The BMW engineers who designed this intake with the help of wind tunnels probably are satisfied that the amount of air entering where they placed the intake is sufficient.
How would stuffing the intake down into the fender area where there isn't as much of a rush of air give you any better power/air?
Plus, that air is flowing so fast into the "air scoop", then through the filter and into the engine that I don't really believe that the engine compartment can sufficiently heat it up compared to the CAI.
Here is another thought. If the whole cooler air thing is really true, then shouldn't you notice an increase in horsepower on colder days? In the morning when it is 35 degrees out, I don't notice any difference in performance than when it is 85 degrees out.
I understand that cooler air is more dense and can "hold" more oxygen, but is it to such a great degree that you can tell in performance?
And even if it is, you are back to how a CAI sucking from inside the fender is cooler than the air rushing into the front of the car.
If someone can change my mind, I am all ears cause I would love to do the CAI thing for some easy HP.
Piece (yeah that kind)
<span style='color:blue'>Piece (yeah that kind)
2002 330i Titanium Silver w/ Sport-Premium</span>