STi under aero bits - Page 2
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This is a discussion on STi under aero bits within the Exterior and Appearance forums, part of the Tutorials & DIY category; any updates?...

  1. #16
    Registered User djerickd's Avatar
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    any updates?

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  3. #17
    Registered User lukeskywrx's Avatar
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    I just really hope that they stay put over the lifetime of the car. It would be a real shock on the interstate.

    looks good

    luke
    I just don't get this drifting thing, why would I spend money to put a car in the wall for a bunch of stupid 16 year olds with dreams of fast and Furious?

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  4. #18
    Registered User kessler89's Avatar
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    Quote Originally Posted by lukeskywrx
    I just really hope that they stay put over the lifetime of the car. It would be a real shock on the interstate.

    looks good

    luke
    they must mount on there pretty good cause subaru is putting them on all of the 06 STi's
    Aspen white/gold 03 sedan *SOLD*
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  5. #19
    Moderating on the run! Big Sky WRX's Avatar
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    Two trip to the big city (300 round trip)- gas mileage is on the very upper end of what I've ever got (28-30). I'll need several more trips to say w/ any certainity. My main reason for putting them in is high speed stability for track days, my first event isn't till May.

    I do have the rear diffusor in as well now.

    I did notice that wind seems like it has less efffect at highway speeds- this can't be measured, just an observation.
    "Simplify and add lightness." - Colin Chapman

  6. #20
    Registered User Pzary3233's Avatar
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    Quote Originally Posted by Big Sky WRX
    I do have the rear diffusor in as well now. .
    Do you think that one could benifit from a rear diffusor that went across the whole back end of the car instead of the middle part? Or maybe not because we don't attain high enough speeds on highways to make it effcient enough? Have you been to the track? Does it seem more stable?

    Also, where did you get the parts? From your dealer or were you able to find them online?

    Thanks!

  7. #21
    Moderating on the run! Big Sky WRX's Avatar
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    A well designed rear diffusor that went across the entire rear should in theory be even more effective- i think there are few high end carbon pieces out there that do that- can't comment on how effective they are.

    Yeah these are all oem pieces- the side ones are oem on 05+ STi's, the rear diffusor 06 STi's.

    I won't get to the track till May unfortunately.
    "Simplify and add lightness." - Colin Chapman

  8. #22
    Registered User Pzary3233's Avatar
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    Not ready to pay $$$ for a rear diffuser... I'll go with stock STi if I do it! Thanks for your help!

  9. #23
    Registered User chimchim's Avatar
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    At what speeds does the underbody and diffuser seem to "start making a noticeable difference"? (60 mph? 70? 80)?

  10. #24
    Moderating on the run! Big Sky WRX's Avatar
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    I think they make a difference w/ gas mileage at highway speeds- not a huge difference, but it appears to make some. From a performance standpoint I won't be hitting the track till the end of May so I can't say w/ any certaintity.
    "Simplify and add lightness." - Colin Chapman

  11. #25
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    nice right up. i've been looking for something like this. thanks.

  12. #26
    The Default One SeattleJeremy's Avatar
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    Did you make a write up for the rear diffuser install?
    I did a search but couldn't find it.

    Thanks for the right up!

  13. #27
    Moderating on the run! Big Sky WRX's Avatar
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    Quote Originally Posted by jeremy96gase
    Did you make a write up for the rear diffuser install?
    I did a search but couldn't find it.

    Thanks for the right up!
    I didn't write up the rear as there is a pretty good one on scoobymods.com (nasioc as well)- I used the Cusco bar which made things very easy on the rear install.
    "Simplify and add lightness." - Colin Chapman

  14. #28
    Ian
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    Hey Big Sky, where did you get the side skirts? Did you order them from some where or did you get them from your local Subie dealer?
    Thanks, Ian
    Ludachris speed? Whats the matter Conel Sanders? Chicken?

  15. #29
    Moderating on the run! Big Sky WRX's Avatar
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    local dealer- he ususally price matches almost anything I'm looking for + saves on shipping

    Quick update- made a coule of more trips to the big city and mileage is still in the upper end
    "Simplify and add lightness." - Colin Chapman

  16. #30
    Moderating on the run! Big Sky WRX's Avatar
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    Well I can finally comment on high speed stability Got back from a two HPDE this last weekend.

    On the back straight there is a slight up hill section w/ a kink that you take at full throttle- I was hitting 120mph at the kink (130ish before the braking zone). The car felt a lot less floaty at the kink vs previous events- I'd have to say there is less lift. I can't quantify it in numbers obviously, but I've been to this track several times and have a good feel on any changes.
    "Simplify and add lightness." - Colin Chapman

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