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Old 03-11-2016, 03:21 PM   #16
Racer Boy
Racer Boy
 
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Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
You definitely want to have the top up - the aero is much better. On a Miata, the top up gives about 5 mph better top speed, and that is at 120 mph, not 150!
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