Thread: E85 fuel FAQ
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Old 03-05-2013, 02:32 PM   #2645
WRXt4cy
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Member#: 172698
Join Date: Feb 2008
Chapter/Region: MWSOC
Location: Des Moines, IA
Vehicle:
11 STi Dom_3.5 E85
02 v8 Spec C E85

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Quote:
Originally Posted by 1VIPWRX View Post
i was tuned for high 11s afr wot now its in the 9s wot.. can the winter blend cause that to run that rich or something else?
No, that sounds more like a boost leak or very low ethanol content.

To give you a rough idea, 80% ethanol tuned to high 11's should be in the low 11's when its around 70% ethanol.

I would check for boost leaks and if you don't find any, I would try to test the ethanol content from the station you filled up at.
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