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  1. #1
    New Member 5 Rep Points Peter H's Avatar
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    FiST rear spoiler - why the slots?

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    Why does the FiST rear spoiler have slots? Anyone have any aerodynamic insights?

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    Because it looks cool.

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    Pushes air under the spoiler for downforce.

  4. #4
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    It wouldn't create downforce. It simply creates more drag and reduces lift.

    Sent from my SM-G950U using Tapatalk

  5. #5
    New Member 14 Rep Points Sessantacinque's Avatar
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    The slots look good, although in the 2018 FiST they 've been deleted in favor of a flat and little longer spoiler
    2015 Fiesta ST
    Frozen white, stock engine and engine control unit, modified air box, BMC air panel, Eibach springs kit, ATP 17 rims.
    Rear seats, plastic rear panels, central tunnel, complete AC system with radiator, car audio with speakers, upholstery and soundproofing deleted.

  6. #6
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    Handlebars for drunken escapades when y’all can’t wait till you get home
    2016 Shadow Black Fiesta ST
    -Rally Armory Flaps-

    $15,900 and it can be yours!!

  7. #7
    Member 177 Rep Points Clit_Beastwood's Avatar
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    less water pooling, and maybe to reduce turbulence along the edges? the way they're shaped they probably balance pressure from behind the hatch to top edge of the slipstream. Would be interesting in a wind tunnel to see what smoke does across the holes.

  8. #8
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    to help clean the rear window? without the slots there would be "vacuum pocket" right there.
    mountune mods;... Mp215, High Flow Induction Hose,Complete Intercooler Upgrade,Silicone Coolant Hoses, Quick Shift Kit, Spring Set, Rear Motor Mount, Front Shock Tower Brace and a Mishimoto Trunk Brace.

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    To aggravate you trying to get wax out of them.

    Turbo Encabulators?

  10. #10
    Member 326 Rep Points XR650R's Avatar
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    Guest-only advertisement. Register or Log In now!
    Quote Originally Posted by Sessantacinque View Post
    The slots look good, although in the 2018 FiST they 've been deleted in favor of a flat and little longer spoiler
    Looks the same to me.

    https://www.ford.com/cars/fiesta/models/fiesta-st-line/

    EDIT: The US model, not the EU.
    2017 Magnetic, everything but the Recaros. MP 215, mountune shift kit and shift knob, Husky floor liners. That's all I'm doing, I swear!.. OK, I lied. Also added an intake hose and symposer delete. But that really is all, I swear this time! Okay. just one other thing: A mountune RMM. Now I really am done, I promise!


 

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