Quote:
Originally Posted by hk328
Are you positive? Z4 35is has characteristics of N54 engine - peak torque at 1500 rpm rather than 1300 rpm. This is according to BMW site.
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Positives as in opening the hood and looking myself
no, but the specs. on the BMW site look like N55 "3.0-liter BMW TwinPower Turbo inline 6-cylinder, 24-valve 335-hp engine. Combines a twin-scroll turbocharger with variable valve control (Double-VANOS and Valvetronic) and high-precision direct injection"
I also posted about it a few weeks ago.
http://www.e90post.com/forums/showth...ghlight=Z4+n55
Pretty sure in late 2012 production switched to N55.