Quote:
Originally Posted by kach22i
I would not call the top foil on the white car a "vortex generator".
I would call the tiny shark fins "vortex generators", and you did not post a photo of those.
I agree that if a garnish/device redirects air somehow to a second device intended to increase drag and down-force, that this second garnish/device will operate more effectively. I have this same exact situation with my roof wing and rear spoiler, see roof wing in my signature below.
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That thing on the Mitsubishi is a section of what NASA experimented with on a commercial airline fuselage,called a LEBU,for,Large Eddy BreakUp device.
It was to act as a VG.We don't see any used,20-years or so later,so one might presume they had little value.
It probably does help with rear lift on a Lancer,so during rain,etc. probably a nice foil to hydroplaning.