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      10-30-2013, 02:54 PM   #11
edennelson
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Drives: '14 E71 X6M, '14 I01 i3
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Quote:
Originally Posted by Singh97 View Post
Will it add even more air from the side grills even after having that big center grill and big kidneys?
Yes it will reduce mpg. I can't say by how much, it's defiantly not huge.
It's probably similar to having a dirty air filter, or a couple PSI low in your tires.
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