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Old 12-02-2019, 11:19 AM   #2
Scooby Specialist
Member#: 298403
Join Date: Oct 2011
Chapter/Region: W. Canada
2008 WRX Premium
Spark Silver


I don't know if the 2.5i are prone to this, as they have a differently designed intake, but on some WRX's of this era, there's an intake-to-tgv ring seal that weren't made thick enough and contract too much in the cold and basically cause an air leak. Subaru updated the part and p/n with thicker seals that solves this problem. Might be worth looking into if this applies.
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