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2012 Black SX Prem. & Tech.
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My understanding is spoilers change the way the airflow goes over the car. So I think the effect will be minimal?

To get more downforce, you'd need a wing, I think? Maybe another question is whether this ducktail works like a spoiler or a wing.

I'm guessing it's sold based on appearances only. If this changed the performance of the vehicle, I'm guessing they would advertise the crap out of the performance increase. But since they don't, I'm guessing there is no change.
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