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Old 04-05-2013, 02:04 AM   #8
hella_sti
Scooby Specialist
 
Member#: 139289
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: ND
Vehicle:
2003 WRX Wagon
PSM

Default

2.5 mpg better mpg isn't due to a lip with less than 1% frontal facing surface area compared to the rest of the car. Even if you were getting 30 mpg to begin with, an extra 2.5 mpg is an insane amount of improvement that cannot be achieved with a cheap hunk of plastic hanging off the front of your car.
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