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      08-26-2020, 08:00 PM   #3
jwalker87
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Drives: '08 335i, '11 335xi, '01 Z3M
Join Date: Jul 2010
Location: Pittsburgh, PA

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You are correct; functionally, the only difference between a 'blow off' valve and a 'diverter' valve is that the latter ... diverts ... the air back into the intake tract instead of to the open environment. The former have additional protections designed in to prevent debris lodging in them, or should, since they are open to the environment.

One item of note, if you do disconnect the diverter hoses, be sure to plug them, or you will allow unfiltered air into your intake.
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