Mountune ethanol programming for the Fiesta ST

Discussion in 'Fiesta ST EcoBoost™ Tuning' started by Randy@mountune, May 19, 2014.

  1. Randy@mountune

    Randy@mountune Active Member

    Hey guys, I'm working on our all new Mountune programming for ethanol blends, which is an E30 equivalent. I'm looking for some Fiesta ST test cars. This is for the Cobb AP that we sell. Let me know if you're interested by posting here or emailing me. Thanks!

    You can order our Cobb AP here:
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  3. WScottCross

    WScottCross Well-Known Member

    Interesting! I'm curious, I've read that with an engine tuned for it, it supposedly delivers better power AND good fuel economy. Where can we find the fuel? I already have an AccessPort. If I can find the fuel, I'll give it a shot.
  4. D1JL

    D1JL Well-Known Member

    I have never seen E30 sold here in California.
    And we grow a lot of corn.

  5. RodMoe

    RodMoe Well-Known Member

    Like other I have never heard of E30. E85 all over but nt the other one and I think you need "Their" COBB AP to load the M tunes . however I may be wrong on this let hope for more info ..
  6. WScottCross

    WScottCross Well-Known Member

    The link takes us to a page for the standard AccessPort, so I think it might work. The fuel is the big question. Do we have to blend our own with E10 and E85?
  7. RodMoe

    RodMoe Well-Known Member

    Yup saw that too hehe, Anyway in for info :)
  8. wash

    wash Active Member

    Is this going to be a lots of torque tune or are you trying to squeeze out more power with less air by the lower stochiometric ratio?

    It sounds like it could be interesting but it would suck if I got the fuel mix wrong and popped a motor.

    If its a more torque tune, when do you worry about the bottom end or lifting a head? We are already at 150 ft-lbs/liter, the cylinder pressures must be really high.

    Thinking about this stuff is why I want a turbo upgrade that hopefully keeps low end torque the same and just holds on to it until redline. That would keep the cylinder pressures safe and probably work on pump gas.
  9. mossdahaus

    mossdahaus Member

    Doing some research about local ethanol fuels available...ill get back to you!
  10. McRib 1s Back

    McRib 1s Back Well-Known Member

    I just realized we have two threads going on this topic (other in Mountune).

    Anyhow, I think the E30 target blend is just being conservative to start. I know a lot of the Mazdaspeed 6 guys run a mix of up to 50/50 E85 to avoid issues. I've heard that our car's fuel components are already pretty well suited to Ethanol, so maybe we don't have the some corrosion concerns?

    Just mix ordinary gasoline with E85 to get your target blend. I'm suddenly happy that a new E85 station just popped up around the corner! I'd like to see a higher blend to serve as a substitute for race gas! Oh yeah, I'm definitely in! :)
  11. totusPorcus

    totusPorcus Member

    e30? in the us? never seen it

    i have an access port for my WRX. bigger turbo, turbo back, injectors, bigger top mount. i get 300 at the wheels on a 2.0l, which means somewhere around 350 to 390 at the crank. this on e85. e85 is cheap race gas. I also have a 93 oct map. i run one or the other depending on what i fill up with. and i wont do blends. i always go empty before i change fuel.

    e85 prevents detonation, cools the motor and is great for forced induction. but i see no way you get BETTER mpg when adding ethanol in any blend since it has less energy per gallon than gas.

    i hope the FIsT fueling can support the increased levels of fueling to support e85 with a bigger turbo but we will have to wait and see. as i have said in other threads, the turbo is more or less maxed out. to get a significant increase on output, you need a bigger turbo. so adding e85 maps to the exiting configuration doesnt seem worth the effort.

    and btw, on my WRX the 5 speed is the weak point. going beyond 300whp requires an STI 6 speed install or a custom rebuild of the 5 speed. the point being is that there will be weak points in the FIst as folks increase the motor output. im curios what will break first for those out there on the bleeding edge
  12. Randy@mountune

    Randy@mountune Active Member

    You'd just need to find a station that sells E85 and mix your own. Our cars are not set up to run pure E85. This is how we handle it on the Focus ST.
  13. Randy@mountune

    Randy@mountune Active Member

    Pretty sure it's not around. However, you can get E85 and mix it with CA 91 octane to get the desired end result.
  14. Randy@mountune

    Randy@mountune Active Member

    You'd need our Cobb AP that we sell (not to be confused with the mTune flasher that we sell) in order to take part in this. :)
  15. Randy@mountune

    Randy@mountune Active Member

    I'm just trying to get the most power and torque that I can safely. I don't run our Mountune programs on the ragged edge, though; that's not how we approach things here.
  16. BlueBomber

    BlueBomber Active Member

    I am local to Fountain Valley and already own a 2014 Fiesta ST with AccessPORT V3.

    Where the hell do you find E30 in our neck of the woods? I see plenty of Propel Stations offering E85 but nobody marks the pumps E30.

    itsnitronick at live dot com

    Very curious about this though since the Scion FR-S dweebs fix how gutless their cars are with an E85 tune, apparently they pick up 45lb/ft of torque... which is still quite a bit shy of what we make stock lol
    stupid FR-S kids
  17. D1JL

    D1JL Well-Known Member

    What is the mix ratio?

  18. Randy@mountune

    Randy@mountune Active Member

  19. D1JL

    D1JL Well-Known Member

    SpaceFish likes this.
  20. ST-in-Mich

    ST-in-Mich Member

  21. Randy@mountune

    Randy@mountune Active Member

    The Focus ST and Fiesta ST both have a 12.4 gallon fuel capacity according to Ford Motor Company so adding about 3 gallons of E85 to a tank of pure 91 octane with 10% ethanol should put you right around E30.

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