HPA is not the manufacture of this article and as such, we don’t have further graphical representation for you. Haldex has been using the captures we have generated with our AWD dyno to showcase the variations available through a performance controller.
Wheel slip will generate different rates of transfer between the modes, Sport and Race commandeering a faster and more aggressive clutch engagement over OEM, but the net lock up will end up with the same delivery ratios as seen here on the Gen 2 plot we generated.
As for your third question. Yes, the fwd ratio is the same, the Gen 4 comes in three variants and offer OEM, race and ECO in the upgrade controller, Sport has been removed as Race was the preferred setting on Gen 2 platforms.