Vehicle dynamics and electronics
On the 458 Italia the E-Diff and F1-Trac control software are integrated in the same ECU. This minimises communication times between the two systems and, at the same time, the individual logics were evolved to improve vehicle performance.
A new Power On strategy has been developed for the E-DIff governing traction out of corners and is integrated with the F1-Trac logic, an evolution in the combined action of both systems which is also connected with the high-performance ABS control logic, which is specially set up for high-grip surfaces.
The electronic differential continuously distributes torque to the rear wheels, both in Power Off (turning in for the corner) and Power On (accelerating out of the corner), guaranteeing excellent vehicle stability and control in all driving conditions and on all surfaces. The E-Diff 3 now works in a more integrated manner with the F1-Trac, using a series of F1-Trac parameters and evaluations (such as estimates of grip) both in manettino positions in which the F1-Trac is inserted (Sport – Race) and those in which it is deactivated (CT Off and CST Off). Compared to previous versions, E-Diff 3 delivers improved torque distribution coming out of corners (in Sport, Race, CT Off and CST Off), which translates into improved grip, better roadholding and more progressive handling on the limit. The result is an improvement of 32 percent in longitudinal acceleration out of corners compared to previous models and a lap time at Fiorano of just 1" 25 seconds.