[Vman455]

Originally Posted by mpg_numbers_guy

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.