Focus Fanatics - View Single Post - anyone using premium gas ?
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Old 01-29-2013, 12:57 PM   #41
Roadworthy
Focus Enthusiast
 
Join Date: Jan 2013
Fan#: 109039
Location: Edmonton, Canada
What I Drive: 2012 SGM MK3 Titanium

Posts: 168
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Here is an interesting idea:

Those who have a 2012 TI or I think virtually any 2013 that is designated as being able to use E85, I think they are tuned to scale better with higher octanes. E85 from my understanding has a much higher anti-knock rating, hence why people throw it in for race applications. The big requirement for engines to use E85 from what I remember is high pressure (Direct injection) and a tune that can scale the ignition timing higher to take advantage of the higher anti-knock properties, hence more power!
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