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On closer inspection I think this car could do well with a front dam. The undercarriage hangs about two inches below the grill, so there's definitely room for improvement there. I'm going to be asking around on the Corolla forums to solicit opinion. Also I read up on the Porche 914 aero thread... particularly the diagrams of cars with different aero configurations. This corolla pretty much has a 90 degree slanted back windshield, which according to the diagram improves economy, but it's not clear from said diagram that it would improve with a rear spoiler. I also mean to increase the tire pressure to 36psi from the stock 30 (max sidewall on my Hankook Optimos is 44).
I wonder if it would be possible, with a belly pan, front dam, back wheel skirts, increased psi, disc wheel covers and rear fin to increase avg mpg to 40 from the stock 30. Messing with the mirrors is completely out of the question, though.
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