Gas Mileage with JB4 Insalled

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Gas Mileage with JB4 Insalled

E60 M5 (2006 - 2010)

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07-11-2012, 05:18 PM

caoman911

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Location: Harrison, NJ

Join Date: Jul 2012

Posts: 4

Mein Auto: 2008 535xi

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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.

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Gas Mileage with JB4 Insalled

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