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Old 03-22-2018, 11:00 PM   #14 (permalink)
Vman455
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Location: Champaign, IL
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Pope Pious the Prius - '13 Toyota Prius Two
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Quote:
Originally Posted by mpg_numbers_guy View Post
Or these vortex generators? Fit For Roof Shark Fins Spoiler Wing Kit 9Pc Vortex Generator Evo-Style PP
Or would they not be worth it?
If you tuft test the rear window, you'll find there's a bubble of flow detachment right in the center, at the base. I added 6 vortex generators a few inches down from the top of the rear window, angled at ~15 degrees to the direction of flow, and it kept attached flow across the entire window. Effect? Yes. Measurable effect? No.



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