01-31-2010, 02:29 PM
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#32 (permalink)
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Master EcoModder
Join Date: Jan 2010
Location: Oregon
Posts: 471
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Thanked 65 Times in 48 Posts
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This Aerospeed article has a ton of helpful information, including trials of different shapes/sizes:
Modifying Under-Car Airflow, Part 2
Measurable on-road improvements from a custom front undertray
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