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Old 10-18-2013, 12:38 AM   #12
Scooby Guru
Member#: 79643
Join Date: Jan 2005
Chapter/Region: NESIC
Location: Cromwell
2015 WRX STI
Terminal black pearl


Originally Posted by Strutton View Post
it's not the normal woosh, it sounds more like turbo flutter
If it kind of goes "choo choo choo choo," especially at low boost, then the valve may not be opening quickly enough. However, it still is nothing to worry about. If at high boost, make sure the vacuum lines are connected to it/not damaged.
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