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      02-26-2014, 09:18 PM   #12
wmandra
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Drives: 2010 328i, 2014 Z4
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the N20 Z4 uses the same 600W fan as the N54, so I would think the 850W fan from the 335is would a decent upgrade. Don't know about the N54, but on the N20 the JB4 has a "Max Cooling" mode which essentially runs the water pump and fan at full power all the time.
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2014 Glacier Silver Z4 28i M Sport - See the build thread: http://e89.zpost.com/forums/showthread.php?t=950367
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