Thread: jb4 finally installed!
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      05-19-2012, 12:17 PM   #14
amitkhas
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Drives: BMW 335i X-Drive Sedan
Join Date: Jan 2012
Location: Boston, MA

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What kind of gas mileage do you get with JB4?

They say PPK1 is rated for the same as stock. I hear JB4 is less, but I wonder how much less.
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