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Discussion Starter · #1 ·
Tried going from stage 2 (catless downpipe boost creeped pretty bad only drove it once) back to stage 1 with factory dp back on and im still getting around 18 on the boost gauge and boost cutting any suggestions? I can run some data logs of that helps (does it matter what gear never done a data log) all my mods are SF intake perrin LWCP invidia N1 catback and perrin recirculating bov.
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Master Baiter
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12,649 Posts
Check vacuum lines
 

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At what RPM is the over boost occurring? Boost creep will be in the very upper rev range, above 6000rpm.. and the stock turbo in the 2005 STI typically does not have any issues with boost creep because the wastegate is appropriately sized.
 
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