From the description in your link, it sounds like the "hidden" mode after holding in that button for 3 seconds would be equivalent to the Z's 7AT M-mode + VDC OFF like you'd use on a track, whereas "Sport" mode would just raise the shift points a bit but still be "automatic". It's probably comparable, but can't be sure without confirmation of technical details (like whether it does full lockup in the torque converter, and whether the shift times are comparable).
|