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M Performance Exhaust Impact on Performance
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01-24-2013, 07:50 PM
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Quackdiesel
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Drives: 2014 X5 35d M Sport
Join Date: Oct 2012
Location: AB
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I was considering a mpe but not so much if it is just to improve the sound. My next problem is if I were to install an aftermarket exhaust would the increase in performance decrease my fuel economy? If so I would have to stick with the mpe. LOL
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