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I use 93 super but all places here have 10% ethanol. What do you guys with SCs do? Should we use octane boost or is the 93 fuel good enough? I wish I had a place that sold no ethanol but I do not.

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I use 93 super but all places here have 10% ethanol. What do you guys with SCs do? Should we use octane boost or is the 93 fuel good enough? .

 

 

93 with 10% is not a problem as long as it's 93, octane booster will be a problem, it will foul your plugs sooner than later without exception.

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So now that EPA has given the go ahead for 15% ethanol, what are we to do?

 

Will Ford honor the warranty if the feds allow refiners to create a fuel that we are not supposed to use and it becomes the only thing available?

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Tune the car for 91 octane not 93. We have 93 octane here in Texas, but many states don't - hence my tune is for 91 octane. I truly doubt that for 99% of your driving, you would ever notice a difference in performance between a car tuned for 91 octane vs 93. ( I have the Whipple 550 kit.)

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