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Old 11-10-2011, 09:44 AM   #55
IOMZL1

 
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Drives: 2015 Z/28 | 2017 Viper ACR Extreme
Join Date: Aug 2011
Location: Brownsburg
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This is great information. Very interesting. Still want to change out that spoiler?

Looks like downforce will probably hurt fuel economy: Don't expect that gas guzzler tax to disappear.
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