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Old 12-10-2016, 02:16 PM   #5 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
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The rear spoiler is a partial Kamm, yeah. You could very easily extend it a few inches and see possibly measurable improvements in economy. Take a look at this 70+ mpg Civic:

http://ecomodder.com/forum/showthrea...avy-28815.html



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