Originally Posted by lucid
Like you say, it seems like the two lines going to the intake plenum are it for the intake, which means they have eliminated the stock intake element in the bumper. I bet the two small openings down low to the sides in the ALMS bumper are for brake cooling then.
And, I can't see any evidence of a third intake path such as the one on the stock hood. The function of that opening has been an item of discussion, and I've been meaning to take some airflow measurements there for the longest time...
The number of intake air restrictors and diameters are specified below. M3 has a 4000 cc displacement and 1150 kg weight (i think), so it would have 2 restrictors of 31.1 mm in diameter.