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      03-11-2012, 10:26 PM   #511
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Drives: 2011 335i coupe
Join Date: Sep 2011
Location: seattle

Posts: 21
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Originally Posted by elitefusion
I did this yesterday as well on my 2011 335i xDrive Coupe (automatic) and it sounds AMAZING! i did notice that the gas in the car started to drop in MPG for some reason, but i think its because i was in traffic and just happened to pay attention to it a bit more then usual lol
Hey did it show any errors after that? Cuz I do too have 2011 335i and I don't want the dealer to find out. : thanks

Jake K
335i Mpower
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