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Old 09-27-2012, 06:44 PM   #2
chappell943
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Member#: 297718
Join Date: Oct 2011
Chapter/Region: International
Location: New Zealand
Vehicle:
2001 V7 Sti Prodrive
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You do have some knock which isn't great, I would try stay out of boost until this is sorted. In my opinion the AF learning is pulling fuel out which will carry over to open loop fueling which would be causing you to run slightly leaner under boost which could explain the knock, I would do a leak test on your intake to see if you have a leak of some sort.

If you don't have a leak then I would suggest your maf scaling is incorrect.
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