m57n - Power Differences
07-06-2015, 07:19 AM
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My Ride: 2004 E61 530d Sport
m57n - Power Differences
Does anyone know what differences there are on the m57n between the 214bhp, 227bhp and 231bhp engines ?
What gives it the extra bhp ? is it a different map/tune ?
What gives it the extra bhp ? is it a different map/tune ?
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