Splitters? Diffusers? - Page 2 - Fuelly Forums
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Old 11-24-2008, 04:39 PM   #11
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Join Date: Jun 2008
Posts: 96
Country: United States
No, a diffuser, like the one in the pic, uses the venturi effect to re-introduce the air under the car into the main airstream without causing as much turbulence. It's not just a rear undertray it's more than that. it has vertical fins sticking out to direct the air like the vortex generators people put on top of their car. I think it would make a difference in any car's aerodynamics. (that or it only helps at speeds above 200...)

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