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      09-20-2018, 10:22 PM   #17
roastbeef
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Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

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i've seen that diagram before, and i think they are over simplifying it for public consumption. most people aren't going to obsess over it like we do.

my sole argument is based on this- i'm tall and i can see the driver's side hood vent. we've all seen the water come out and hit the windshield. from time to time, i see leaves, pieces of trash, pine needles, and string pinned up against the hood vent screen. this is frustrating to me because i can see it when i'm driving, but it falls back into the airbox when i slow down.
if there were suction at all, why would anything get pinned up against it? i think it helps act as an "open" air intake at lower speeds, and it transitions around 30-35mph into a flow-through design.
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