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      11-20-2012, 11:56 AM   #71
BQTuning
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Drives: 2012 Z4 sDrive35i M Sport 6MT
Join Date: Nov 2010
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Quote:
Originally Posted by j.parhas View Post
I have the same sound, I can hear it even from inside my home if someone else is driving my car. It started making this sound when I installed jb4 but I doubt that this is the cause. Got a dci and muffler delete and now i can't hear it since the exhaust is so loud !!
Less restrictions on the turbos, more and better air flow, more boost.


Its normal to hear the sweety and snake orchestra coming from the turbos expecially in colder weather