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E85 is an ethanol based fuel...85% ethanol. In the US it's made using corn. Can't run it without a tune because the fuel consumption is much higher than with normal gasoline, but with it you can make a decent amount more power...it's about equivalent to 105 octane. I think on an NA car it allows for more aggressive timing; boosted guys love it because you can run higher boost with less chance of pre-detonation. It also helps keep cylinder temps down.
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Ultramarine 2013 Scion FR-S 6MT
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