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- 2015 Mazda 3 iTouring sedan
That would make sense as to why the Evo's run that splitter/diffuser on the top of the rear window.P-Funk! said:(enguard)
Uh, no joke - a line of shark fins (parallel to the spoiler) across the back (4/5ths of the total lenght of the roof) of the roof would help reduce high speed drag. This would break up the vortex caused by the airflow around the rear end. Think the dimples on the golf ball - kinda' effect. Trip ('break up') the laminar flow around the vehicle at the right places.
Stoopid looking? probably. Less lame than the 'towel rack' on a Civic? yep.