View Single Post
      01-24-2010, 01:54 PM   #2
stressdoc
Moderator
stressdoc's Avatar
Dominica
186
Rep
10,271
Posts

Drives: F80 YMB
Join Date: Jun 2005
Location: MO

iTrader: (0)

The differences between the N55 and N54 in the 535i are determined by software specs, not inherent differences in the performance potential of the bi-turbo (N54) versus twin-scroll+valvetronic (N55) designs.

Believe me, there are variants of the N55 in R&D that smoke the current N54 & N54B30.