Gearbox, traction, steering and differential software for S55 F8x M2, M3 and M4
S55 F8x models can have their gearbox, traction control, steering and differential software matched to the F8x GTS/CS. It completely changes how the car drives and handles. The biggest upgrade is the gearbox: the "kangaroo" jerk at low creeping speeds becomes barely noticeable.