View Single Post
      07-09-2012, 09:51 AM   #18
sin911
First Lieutenant
sin911's Avatar
United_States
4
Rep
306
Posts

 
Drives: '13 E92 M3
Join Date: Jun 2012
Location: Miami

iTrader: (0)

Quote:
Originally Posted by Snig View Post
Looking at the diagram, the stock airbox draws air from intake at the grille, intake at the driver side air duct, and drivers side hood "vent". All connect to the air box.
I don't know if the hood vent is actually supposed to draw more air in. Aerodynamically it will not be exposed to much air pressure. I think it is an actual vent for the excess air in the box.