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Message: <blockquote data-quote="E90-3100" data-source="post: 364660" data-attributes="member: 17409">A friendly match to see the performance difference is always fun to do! A drag perhaps?I was told by a friend from Germany that the US exhaust should give more power than the EURO model as the polution and noise standards are stricter in the EURO. Therefore EURO model will have to maintain within a strict level, means lower power.No matter what, I personal prefer original mods on my car and BMW would definitely have done its homework to give the best to people like us! Other branded mods, might not be 100% compatible or give us the advantage that we thought it would.</blockquote>