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					Originally Posted by KRAM36  In the youtube video it says the spoiler on the Porsche creates more drag at the rear of the car.
 " the redirected air leads to a lower pressure zone behind the car, which can increase drag"
 
 Having the spoiler up will not improve the mpg.
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I guess we will just have to agree to disagree then.  Tailgate up always improves highway gas mileage on a pickup.  The Boxster spoiler operates under the same principles.  Separated bubble.
		 
				__________________2009 Cayman 2.9L PDK (with a few tweaks)
 PCA-GPX Chief Driving Instructor-Ret.
 
				 Last edited by Topless; 03-11-2015 at 06:50 AM.
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