Anxious to see an aftermarket down pipe.

Discussion in 'Fiesta ST Engine Upgrades' started by jeffreylund, Aug 17, 2013.

  1. lessard.dcj

    lessard.dcj New Member

    all this negative jabin off at the lips and yet you dont have anything concrete to offer your side of the argument, starting to sound troll-ish to me.

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  3. lessard.dcj

    lessard.dcj New Member

    sure we can get 250whp without bolt ons...

    you guys didnt find the hidden .4L in the trunk?
  4. Fistofthebrownstar

    Fistofthebrownstar New Member

    Agree, small turbos just can't flow enough air at high rpm, this might be one of the reasons boost is reduced as you approach 6k.

    I'm using COBB's FOCUS ST Stages as a guidline for % improvements possible in the Fiesta:

    COBB Focus ST:
    Stage3 93: Max +26% HP / +28% TQ
    Stage2 93: Max. +17% HP / +20% TQ
    Stage1 93: Max. +10% HP / +20% TQ

    COBB Fiesta ST:
    Stage3 93: Max +20% HP / +21% TQ*
    Stage2 93: Max. +13% HP / +17% TQ*
    Stage1 93: Max. +6% HP / +17% TQ**

    So a COBB Stage 3 Fiesta ST might look something like 230hp/260tq. In a 2700lb car this sounds superdelicious to me.

    *Extrapolated by using 75% of Focus ST figures
    **Actual COBB Stage 1 figures

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