In 2008, the FIA further strengthened its cost-cutting measures by stating that gearboxes are to last for 4 Grand Prix weekends, in addition to the 2 race weekend engine rule. Furthermore, all teams were required to use a standardised ECU supplied by MES (McLaren Electronic Systems) made in conjunction with Microsoft. These ECUs have placed restrictions on the use of electronic driver aids such as traction control, launch control, and engine braking and are tagged to prevent modification. The emphasis is on reducing costs as well as placing the focus back onto driver skills as opposed to the so-called 'electronic gizmos' mainly controlling the cars.