Science doesn’t care how sick your misshapen NACA-style vent looks. It either adheres to some quite detailed specs—and proper placement on the body—or it’s just motorsport cosplay.

For today’s racers—and many generations of Italian sports cars—the qualities of the NACA duct that made it unfit for jets make it ideal for most other kinds of engines, and its low profile ...

Some people suggested the ducts could be used to vent air under the hood and onto the windshield to create a downforce effect, but it could just as easily be some heavy-duty brake ducting.

Science doesn’t care how sick your misshapen NACA-style vent looks. It either adheres to some quite detailed specs—and proper ...