The seconddaries open around 3400 rpm. Also, if you lift your foot off the accelerator the secondaries immediately close so you can hold the rpms above 4000 rpm with the secondaries shut.
The sport light refers to the mode of the ATX. Here in the UK, we can switch the ATx from Ecomony to Sport mode, which firms up the shifts, raises the shift points and holds it in the gears on overrun. This is in addition to the Overdrive being switchable on or off.
Paul
