Clear grill block
I used 1/4" acrylic sheet to block off 4 openings in the front of my car, and also added the air dam. The large oval opening, referred to as the 'parachute' by a friend seems like it should be making a difference although I haven't measured any economy change. The sheets are attached by either rivets, or epoxy on the 3 smaller ones. Also blocked off the side louvers.
The car is electric so airflow for cooling is not necessary. A small radiator can be seen in the front, which is for motor controller cooling.
Wayne
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