Quote:
Originally Posted by 1VIPWRX
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?
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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.