Pressure converter, cylinders 1-4

Disconnect plug connection (1) on pressure converter.

Installation note: 

Plug connection (1) must snap audibly into place!

Disconnect black vacuum hose at connection (VAC = vacuum reservoir).

Disconnect black/red vacuum hose at connection (OUT= turbocharger vacuum unit).

Fig 1: Identifying Black/Red Vacuum Hose And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (2).

Tightening torque 11 65 8AZ .

Remove pressure converter.