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My car is a 2001 X5 3.0L.
Jordo this part is the last elbow on the intake tube just before the air duct attaches to the throttle valve. The photo is a bit confusing because I took it from under the car with the camera on telephoto and it did show the surrounding equipment, but I had to crop the photo to get the Forum to accept it.
I took a new photo for you of the new part and I am holding in the approximate orientation as you would see it when you look down on the part.
The end my hand is on attaches to the throttle valve, the other end attaches to the duct that comes from the air cleaner. The splits were on the BOTTOM of the corrogated part and they were not visible from above. This part is soft rubber not hard plastic like the rest of the duct work coming from the air cleaner if I would let go of the corrogated tube it would spring out straight.
The car was running perfectly, good idle, acceleration, etc., it was just throwing the SES light and the codes.
I am not sure what the Y that comes off of it does, it may go to the Idle Speed Valve. The splits were introducing unmetered air into the engine which would make it lean. I am guessing the injection system then read it was lean and then called for more fuel and the fueling was then out of parameter. If I am wrong about that would someone please correct me.
The end result is it was throwing both the SES light and the codes P0172 & P0175 which translates to Bank 1 & 2 Too Rich.
Here is the photo of the new part:
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