ATP GT turbo dyno results and I was not going to mod this car much, rigtht

Discussion in 'Fiesta ST Engine Upgrades' started by raamaudio, Apr 8, 2014.

  1. raamaudio

    raamaudio Active Member

    I saw this posted somewhere last night but could not find it so making sure it is on the forum.


    I am sure they can get a bit more out of it but those numbers, spread out in a useful RPM band as they are, would make for a very quick ST and more drivable at the same time.

    Edited to clear up the info:
    I was going to build a downpipe and 2.5" exhaust until I saw this and called them. I bought their downpipe as it was easier than building one but also have on order from another place a very high flow cat I will install on the downpipe and parts to build the 3" exhaust to match it. If I could of stayed with the 2.5" exhaust that would of been great as have all the parts from other builds on hand.

    Now I just need to find a proper IC core so I can build that and make the piping, I thought I was done with such mods and building parts but still got the bug, 46th year of modding cars:)
    Last edited: Apr 8, 2014
    bryramos likes this.
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  3. Randy@mountune

    Randy@mountune Active Member

    Lookin good! :cool:
  4. reddog99

    reddog99 Active Member

    Assuming that the stock run is the green one, then they have shifted the torque peak from about 2400 rpm to about 4000. I would expect that to make the car feel a bit bogged down until the engine speeds come up. That's a lot of incentive to mash the throttle more often. Great for the track, but I think it would reduce some of the "fun-factor" for more normal (legal) speeds compared to the stock curve. Very interesting.
  5. raamaudio

    raamaudio Active Member

    I have this system I built from scratch, manifold included, hanging on the shop wall, wish I could of used it but a GT3076R is a bit much for a 1.6L engine.


  6. raamaudio

    raamaudio Active Member

    The stock torque curve is why they limited the boost in 1st and second gear to reduce wheel spin, etc...the new curve which has 175ft lbs at just 500-600 RPM higher and no limited boost will still pull really well from lower RPM but keep on pulling instead of falling off rapidly. You would realize far more overall usable power with such a wider band and not a spike then die that overall driving will be greatly enhanced, not reduced, at the real real we drive at 90% of the time;)

    This is a major real world improvement, nice fat power band starting low enough to use off the line, etc.......

    The Scion tC system was designed to have such a wide power band as well but be a very reliable daily driver capable 350WHP on stock internals, I have seen such builds with 50k miles on them and running strong. It was also designed to make over 500WHP with a built engine and last.
  7. wash

    wash Active Member

    I have to ask them what turbo they are using and what kind of boost they are seeing.

    Luckily they are pretty local.
    myrightfoot likes this.
  8. raamaudio

    raamaudio Active Member

    Could be the GT25/60 but I hope more like the GT28/... for some headroom for guys wanting to go over the top a bit:)
  9. wash

    wash Active Member

    I hope its the big one and running about 16 psi.
  10. raamaudio

    raamaudio Active Member

    I agree:)

    The stock IC could possibly work for a street car, not sure drag, road courses, going to need a bigger one and have to eat the weight gain.

    We could add meth/water injection but those are a pain in the arse to keep filled, same as an IC sprayer, been there, done that. Weight balance could be helped mounting the tank and pump in the back of the car.
    Last edited: Apr 8, 2014
  11. COBB

    COBB Active Member

    I've been working with ATP to help determine the limitations of each of the turbo choices they have been testing. This is one of the 4 or so that we'll be playing with is not fully dialed in. With some extra time and tweaking I think we'll be able to pull the left side of the curve up earlier and keep the power from falling up top. The turbo on the car right now is running on the edge of the compressor map, but this is being done to find out the pure power capacity that could be achieved with limited modifications.

    -Braden @ COBB
    brian, RodMoe and stuntdoogie like this.
  12. raamaudio

    raamaudio Active Member

    Very cool you are working with them and sharing what is going on as you know we can get pretty excited by what may come for this car:) I know you guys at Cobb and ATP will do this right when many will post peak numbers and/or push the limits without really doing all the research needed and claim to make the most power, etc. I am very glad to see competent companies like ATP and Cobb working together, thanks!
    Last edited: Apr 8, 2014
  13. wash

    wash Active Member

    Have you been rubbing up against the capability of the stock fuel system?
  14. Papi4baby

    Papi4baby Member

    Oh goodness.

    I better start saving now for a full ATP kit.
  15. MadMoose

    MadMoose New Member

    Do want. Wonder how bad the torque steer is.
  16. wash

    wash Active Member

    I'm always thinking of turbo upgrades and the turbo that I think is most suited is the EFR 6258 (hopefully with a twin scroll housing).

    After reading about ATP which is doing these things practically next door, I decided to dig a little on Google and I found this:

    That shows you the potential of the 6258 with single scroll: 370 whp on race gas from 1.6 liters, 300+ on premium.

    I think our EcoBoost might even have more potential because our low end torque crushes the Hyundai.

    Any way, when people say the 1.6 will max out at 250 who or our chassis can't handle it, don't believe it.
  17. mcummings182

    mcummings182 Member

    Would these upgrades cause the car to fail an emissions check?
  18. D1JL

    D1JL Well-Known Member

    Yes, in California, unless they were CARB approved.

  19. totusPorcus

    totusPorcus Member

    emissions check. depends on state and what they check.

    and for those thinking about this and how much power they can get, at some point the fuel pump/injectors will be limiting. perhaps you can swap in aftermarket fuel injectors from another direct injection car with a larger motor, perhaps not. but as to the fuel pump, its powered off a cam on the camshaft, isnt it? at some point it may be necessary to open the motor up and upgrade that component making the change a bit more challenging than simply bolting on items and then doing a tune.

    only time will tell.

    im hoping that a slightly larger turbo, with turbo back and a slightly larger intercooler, coupled with a tune will be possible, similar to what i did with my WRX and possibly e85.
  20. wash

    wash Active Member

    If we can run enough boost at high rpm to get to 300 HP on pump gas, e85 would only tax the fuel system more.

    Frankly, if I can get close to that on pump gas, I'll call it good. First, I think that power level will be very nice in a Fiesta. Secondly, its hard to find e85 around here.

    Any way, as much potential as the Fiesta ST has, I hope its at least close to 300 whp on pump gas because that gets us to 9lbs/HP or less with some weight reduction and that's knocking on supercar territory.
    moshaholic2 and Desmond like this.
  21. wash

    wash Active Member

    After seeing this, hearing that they have a catless downpipe and they are local to me, I drove to Hayward and bought a downpipe from ATP.

    The price was good, the welds are TIG, it was available immediately.

    Here are some pics:

    View attachment 1064 View attachment 1065

    View attachment 1066

    From what I've seen it looks like the best deal out there. I won't know for sure until I get it installed but if it fits I am very pleased with the fabrication quality.

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