Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Car seems faster with ethanol
View Single Post
Old 10-07-2012, 03:33 AM   #7
Focus Fanatic
StingRay's Avatar
Join Date: Jul 2009
Fan#: 67421
Location: Phoenix, AZ
What I Drive: 2014 Tuxedo Black SE Sport

Posts: 3,220
Points 2,648, Level 31
Points: 2,648, Level: 31 Points: 2,648, Level: 31 Points: 2,648, Level: 31
Level Up 32% Completed
Level up: 32% Level up: 32% Level up: 32%
Forum Activity 13%
Activity: 13% Activity: 13% Activity: 13%
FF Reputation: 7 StingRay Good Standing Member
Buy-Sell-Trade Rating: (1)
I'm not sure on the 2012's but my '13 is flex fuel capable, so yes the fuel system is designed for it. The new computer system on the MK3 is supposed to be able to adapt to any amount of ethanol content and change the tune to achieve optimal AFRs, or at least that's what I've read. Technically the car could add more timing and therefore make a tad bit more power, but I'd have to see a dyno sheet that proves it's making more power because I wouldn't think the factory ECU has performance in mind when it changes the tune.
StingRay is offline  
    Reply With Quote