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      02-23-2014, 12:28 PM   #3
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Drives: 2010 328i, 2014 Z4
Join Date: Jan 2010
Location: NJ, USA

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the original post is almost 1 year old.... to date there are no known instances of cylinder heads cracking in the field. having said that, there have been cases of blown connecting rods and BMW has gone through 4 different piston designs on the N20.

Its a moot-point for the time being as there isn't any tune/upgrades available for the N20 that will deliver the kind of power levels indicated.
Driver, Ratchet Head Racing #93 BMW Z4
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2014 Glacier Silver Z4 28i M Sport - See the build thread: