View Single Post
      05-12-2012, 01:25 PM   #23
ziominix
Private First Class
3
Rep
168
Posts

Drives: 2011 335i xDrive Coupe
Join Date: Nov 2009
Location: WV

iTrader: (2)

If you're hearing more than the intake whoosh, and diverter valve letting off pressure, it could be the increased turbo whistle sound which I've noticed as well. It's mainly noticeable under low rpm high load situations.
__________________
CURRENT--2014 2LT Z51 Corvette Coupe-7MT
PAST--2011 335i xDrive coupe-6MT-
Appreciate 0