My response was in regards to comments like these. They should drop the N55 in favor of the N54? Really? Does that make any sense to anyone?[/quote]
N55<N54. N55 is newer but worse which is why the n54 keeps winning awards and it is used in the specialized applications for BMW such as the IS models and the 1M. So yes, it does make sense for BMW to use it again.
If everything seems under control, then you aren't going fast enough"