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Old 12-02-2019, 06:02 PM   #2
noobultimatum
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Member#: 431550
Join Date: Oct 2015
Location: South Florida
Vehicle:
2016 WRX
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So a little bit of corn wont do damage even when not tuned for it. A LITTLE BIT being the important part.

The only time I used a gallon or 2 of corn in the tank was when my DAM dropped due to some bad gas. It helps pick up the octane.

If you have no issues, I would not do it. If you want the most out of the E content, get a tune for it --- pro-tune flex fuel or a canned e30 tune.
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