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      07-16-2013, 05:59 AM   #13
Delta0311
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Drives: 2011 BMW 335xi E92
Join Date: Apr 2009
Location: NJ

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That is not possible. Removing the charcoal filter has a negligible effect on the vehicles performance. There is no way you would see a MPG decrease because of it. More likely, you are pushing the car a bit harder now.
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