Quote:
Originally Posted by Wonderbar
I have reports and photos of highway cruise mpg hitting 39 on the dash readout, I personally experienced an mpg increase on highway cruise; which would indicate yes. I built it to be functional. I cannot claim mpg increase as factual data as it varies greatly.
I'm working on getting actual aero data, I should be getting feedback on that shortly. 
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The reason y I asked,because last time I bought a voltex copy diffuser and it pulled my whole Bumper off after I ran up 100ml free way. And I don't want it happen to this car. And if there is track review will be nice