While gaining mileage is not a primary goal when creating tunes, because our tunes help get the most power out of your engine, it is common to see our "street" tunes add about 1-2 MPG. Because "performance" and "race" tunes are made more aggressive, these tunes will have little or no affect on fuel mileage. Regardless of what tune you use, actual driving style will have the most impact on your fuel mileage.
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