Ford Focus Forum, Ford Focus ST Forum - View Single Post - anyone using premium gas ?
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Old 12-05-2011, 03:42 PM   #29
Focus Jr. Enthusiast
Join Date: Aug 2011
Fan#: 89335
Location: Edmonton, Canada
What I Drive: 2012 Race Red Se Sedan Sport

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Running premium fuel allows the engine computer to advance the timing thus resulting in more power on the lower end torque curve, the burn time for higher octane fuel is also longer resulting in more power.
It would be interesting to see some dyno tests done with regular fuel and premium fuel.
Any of you that used to race will remember what quicker advance curves did for cars.
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