Interesting article on vortex generator.

http://www.mitsubishi-motors.com/cor...f/2004/16E.pdf

 

"Application od the VG's of the optimum shape determined through the above mentioned analyses to the Mitsubishi Lancer Evolution showed a 0.006 reduction in both the drag coefficient and lift coefficient"

They also forgot to state the most important feature of the VG- they look cool so even if it doesn't do much, people will still buy it!

Heck, I'm actually getting one next week