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      12-15-2017, 07:13 PM   #12
wdeerfield
A family of bimmers
United_States
1998
Rep
7,113
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Drives: '13 f30, '11 f10
Join Date: Jan 2012
Location: Clifton Park, NY

iTrader: (0)

the flap will open above 2k rpms and during cold start. you should hear the flap close like a minute or two after the cold start. I too have had the same issue with ice build up on the left tip and thats because i was in comfort and not over 2k to open the valve.
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2013 EB/CR 335i xdrive | DHP | 19" VMR V803 | MPS4S | MPerformance | M3 Grills | BMS Tips | LED Turn Signals | CTS intake | VRSF FMIC | VRSF CP
2011 JB 535i xdrive | ZPP | ZSP | ZCW | 6FL | NAV | 331s Square | MPerformance Spoiler | M5 Grills | Painted Reflectors