Quote:
Originally Posted by caferacer51
I was under the impression that the VG on the rear roofline of the Lancer was to aid rear down force? Surely that goes against this conversation of VG use for economy?
And in the game of fuel economy, is 2% not a substancial gain?
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They were used to improve downforce... What happened in the EVO's circumstance is flow separation decreased the authority the spoiler had. No flow over the spoiler.
The vortex generators were brought in to push the separation point lower down the back glass which helped pull some freestream air towards the spoiler.
I'd take 2% over nothing
-Ryan