Quote:
Originally Posted by JulianEdgar
The above test was done on a 1982 model Honda Civic with a Cd of 0.45. I very much doubt the relevance of that testing to any more modern car shape.
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I was not vouching for the study. The OP mentioned it. I was curious. I am not willing to assume it means they work, either. Anyway, my understanding it that the Evo design's airtab placement took a lot of windtunnel time. I imagine micro adjustments matter a lot.