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      03-26-2011, 11:16 PM   #11
drew4392
Second Lieutenant
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Drives: '07 335i Sedan
Join Date: May 2010
Location: Los Angeles

iTrader: (1)

With the JB4, has anybody noticed a new/more pronounced sucking/howling noise? I notice one that wasn't present with the stock or JB+ setup. Only when I'm boosting and at high RPM, though. I mean, the obvious guess is more boost=more air=more noise..... but just want to make sure I'm not hearing mechanically wrong like a turbo leak or something.....
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