BMW X5: Disc Wheels (Rims)

 Boost-Pressure Control

The boost pressure of the turbochargers is directly dependent on the flow of exhaust gas which reaches the turbocharger turbines. Both the velocity and the mass of the exhaust-gas flow are directly dependent on engine speed and engine load. The engine-management system uses wastegate valves to co

 Cylinder Head Cover

As stated before, the cylinder head cover used on all of the new NG6 engines is made from plastic. However, the design differs between the engines due to engine equipment. For example, the N54 engine does not use Valvetronic and therefore does not need the accommodation for the VVT motor. Also,