Quote:
Originally Posted by MetroMPG
To generate a vortex, you need a plane set at an angle to the local airflow.
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the inner VGs on the Evo are not angled.
skewing begins/increases as they near the driprails.
also they are fins, not just dumb tabs,
there is purpose to their shape much like
the airtabs have - versus the much simpler
fuelsavers!