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-   -   Gas Mileage with JB4 Insalled (http://www.bimmerfest.com/forums/showthread.php?t=632559)

caoman911 07-11-2012 06:18 PM

Gas Mileage with JB4 Insalled
 
Maybe it's me but...I think I'm getting better mileage as a result of installing the JB4. In addition the car behave so much more smooth. I'd like to know if this is a vlid perception or just perceptual hype.:dunno:


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