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Old 04-24-2007, 03:21 AM   #1
STi_Dream
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Default wrx spoiler and sti spoiler

Other than the weight difference , is there any difference in downforce application as i've seen some sti changed their spoiler to a wrx one.

and is the sti one adjustable?

thanks a lot guys
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Old 04-24-2007, 05:29 AM   #2
RP31
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STi spoiler is not adjustable. Yes, it does provide more downforce than the WRX spoiler, but only in noticeable amounts at high speeds.
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Old 04-24-2007, 09:48 AM   #3
STi_Dream
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thanks for the reply bro ..... noticeble at high speeds like how high speed? in track speeds or top speed?

cause im thinking to buy a sti b ut this guy has a wrx wing and im thinking if i should ask him to change it back to the sti spoiler.
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Old 04-24-2007, 09:54 AM   #4
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unless you track your car alot, you probably won't notice too much. if its going to be a dd, just get it based on what you think looks better.
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Old 04-24-2007, 10:42 AM   #5
RP31
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Quote:
Originally Posted by STi_Dream View Post
thanks for the reply bro ..... noticeble at high speeds like how high speed? in track speeds or top speed?
IIRC, it's something like 95 mph.
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Old 04-24-2007, 01:49 PM   #6
Mechie3
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Time to post this pic again:



I forget the speeds....perhaps 60 and 90 mph?
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Old 04-24-2007, 01:57 PM   #7
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Not everyone knows what those numbers mean.
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Old 04-24-2007, 02:27 PM   #8
STi_Dream
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yea sorry i really do not know what those number mean.

and that is in comparison with an evo? not wrx?
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Old 04-24-2007, 03:59 PM   #9
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Yeah, it is a comparison to an evo. What it shows though is that at two different speeds the relative downforce (or lack of in the evo's case) generated.
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Old 04-24-2007, 05:57 PM   #10
STi_Dream
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thanks for the help but my question is more of the wrx spoiler compared to the sti intead of the evo thanks

anyone knows?
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Old 04-24-2007, 06:58 PM   #11
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In the thread where i THINK Craig found those pictures, somebody mentioned that the Impreza cabin was too big for any clean air to reach a low mounted wing like the wrx one. I'm pretty sure this is true, given that there was another picture that illustrated air running directly to the STI wing with the help of the roof vane. Otherwise the air runs a little too high.

I think it sums up to the following:
NO roof vane + STI spoiler = some downforce
roof vane + STI spoiler = more downforce (as shown in the picture craig posted)
anything out there + wrx spoiler = questionable as to whether it produces a good amount of downforce (negative lift).

Do a search on aerodynamics. you might end up with a good document or two to read as well.

Cheers,



Alex
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Old 04-24-2007, 07:03 PM   #12
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Old 04-24-2007, 08:11 PM   #13
STi_Dream
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thanks appreciate guys
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