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      12-05-2012, 11:52 PM   #3
Ezio
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Drives: 2013 E92 M3
Join Date: Nov 2012
Location: MI

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i am new to this engine. but know a lot about Lsx engines. It will for sure smell more, specially if you are not tuning. If you stand behind your car you would probs smell it more. after a WOT run you will smell it.

overall its not THAT BAD, but on a BMW i would go high flow cats.