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Old 11-30-2009, 08:10 AM   #12 (permalink)
RobertSmalls
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Quote:
Originally Posted by Old Mechanic View Post
Also in the case of the Insight there are large openings where the tie rods go from the rack to the front wheels. I believe this is to allow the air to exit to the rear of the front wheels. It's possible (not sure but possible) that reducing the air flow into the engine compartment could cause more turbulence around the front wheels and have a negative effect on CD.

Just a thought.
Yes, I've read that that's exactly what those openings are for. If you're going all-out on an Insight, when you block the grille, you'll also want to block the bottom of the engine bay so less air exits there and more exits into the wheelwells.
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