Thread: 2011 Sti P0172
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Old 11-06-2012, 10:38 AM   #2
Wicked Innovation
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Join Date: Nov 2010
Location: Manchester, NH
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172 is normally caused by a mis scaled intake or injectors. Less often a small boost leak.

Since you have an AP post up your AF Learning values (there are 4) this will help pinpoint the issue.

Wicked M@
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