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  1. Mustang EcoBoost Performance
    so im looking at getting a tuner. i normally fill the car with 94 from chevron which is the besst i can buy in canada. it has 0% ethanol in my searching i kept seeing conflicting information, a gti forum was saying octane ratings are the same between us and canada ( which makes the most sense...
  2. Mustang EcoBoost Performance
    I stumbled across this and read the entire post. It is a really good and interesting read on octane on your 'boost. 93 Isn't 93... - 2015+ S550 Mustang Forum (GT, GT350, GT500, Mach 1, Ecoboost) - Not to mention discussion of tunes.
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