Octane and MPG

Discussion in 'Fiesta ST Chat and Discussion' started by mcummings182, Oct 9, 2013.

  1. RDgolfer

    RDgolfer Active Member

    Just so you know, every engine has different requirements and the octane requirements are to keep the engine from knocking
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  3. TWDM

    TWDM Member

    My results so far is about 26-27 mpg for mainly city driving with the cobb 91 octane tune.

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