Thread: Bad Blow-off valve?
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      09-18-2012, 07:37 PM   #14
Dark_Knight_335
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Drives: 2011 335 E93 M-Sport
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Quote:
Originally Posted by E90Company
Quote:
Originally Posted by onebadmofo View Post
Do you have an aftermarket blow-off valve?
N55's have a BOV built in the turbo
So that's what that noise is!
I thought I was imagining things when I heard that.
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