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Old 11-08-2020, 11:22 AM   #4
heiche
Scooby Newbie
 
Member#: 400179
Join Date: Aug 2014
Vehicle:
2009 wrx

Default

sounds like a boost leak test might be in order. it only takes 2 or 3 psi usually to find leaks. checking by eye is a good first thing to try, but there are so many places that boost leaks can hide - but they usually can't hide from a boost leak test. while testing listen for the same noise, sometimes you can feel air blowing out from a leak, or sometimes spraying soapy water on everything will cause bubbles at the leak.
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