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Old 09-26-2012, 07:08 PM   #2
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MD
Vehicle:
99 SF

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Are you sure its not wastegate opening and closing; regulating boost? Is it Overboosting in 4th or 5th? If so turn boost down til it holds rock solid at tuned level.
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