From a volumetric efficiency perspective, the new "S55" will compete with, and likely exceed, the Nissan VR38 motor. It is just that BMW doesn't have as much displacement to work with. Not that this fact is of any real consolation when it comes down to overall performance, but it is what it is. BMW will also make up some ground against their competition (which, strictly speaking, doesn't really include the GTR anyway) by being somewhat lighter that they are.
Originally Posted by ///MDriver
they should try and make it compete against the nissan gtr
'13 model specs again ..
VR38DETT - 3.8-litre twin-turbocharged 24-valve V6; each engine hand-crafted by its own master technician in a clean-room environment
Horsepower - 545 HP @ 6400 rpm
Torque - 463 lb-ft of torque @ 3200-5800 rpm