I doubt it would in an apples to apples comparison test. In the real world I'd bet you would see a drop in mpg because you'd be revving it more to listen to that sweet exhaust.
I've searched the forums to no avail
On my 2016 GTPP I get a click (felt sometimes heard) when shifting shifting from 2 to 3 and 3 to 4. Is the the notchyness everyone talks about?
The "click" is audible when cold and usually associated with a wee bit of syncro nibble. when warm (after 10+...