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Old 05-08-2012, 12:16 PM   #5
edchuck
Scooby Newbie
 
Member#: 265328
Join Date: Nov 2010
Location: exit 100/NJ
Vehicle:
11 STI sedan stg2
WRB

Default

Sounds like a boost leak or vacuum leak. If you don't find anything awry in the engine bay (check all hoses/connections pre-engine), take it for a drive, see if you can notice any funny high pitched noises.
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