to accentuate maintaining torque up into higher RPMs to better suit the newer GTX turbo lineup that is capable of moving a good bit more air mass. And on top of that, the plenum chambers have been increased in size for a larger air "well" to help fill the chambers AND the flow path from the throttlebodies into the plenum and runners is optimized for larger airflow volume and symmetry.
Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast?
If you are out to describe the truth, leave elegance to the tailor. Albert Einstein