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Old 10-29-2012, 05:27 PM   #1
kmtalko
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What octane fuel to use?

Ok, so my mod list is in my sig and I'm wondering what octane I should be using. At the moment I'm putting in 89. Even though I don't have a tune, should I be using 91? My gas mileage is pretty decent, but I want to know if it would really make that much of a difference before I spend the extra few cents for 91. Thanks


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