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Old 05-26-2010, 09:58 AM   #10 (permalink)
AeroModder
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Join Date: Jan 2010
Location: Oregon
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Tank - '96 Ford Aspire 4 door
Team Ford
90 day: 46.75 mpg (US)
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MPG wise, I can't say. Vortex generators don't reduce drag much at all. However, they are effective in reducing rear lift by raising the pressure over the trunk and rear glass, where there is normally a vaccum. I can only say my car felt more stable in high-speed corners.

On the kammback: I'm wondering about meeting in the middle. In it's current form, it looks like vorticies will be made that will tumble over the trunk. I'm not sure if this is benefitial in helping to fill a void or not.
I'm considering adding to the sides to make the ends vertical to eliminate any vorticies formed by the angled edge, and trimming off the top plane to meet the new edge. I would only be losing a few inches of the kamm, so it wouldn't be too much. I also need to redo the supports...
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