11 36 655 Removing and installing/replacing both actuators (N20, N26)

IMPORTANT: It is essential to observe conditions of absolute cleanliness when removing and installing the intake and exhaust actuators.
Possible malfunction if there is dirt contamination in the valves:

Irregular operation
OBD fault entry
Exhaust gas emission characteristics.
Low engine performance

Necessary preliminary work:

Remove acoustic cover . See 11 12 090 REMOVING AND INSTALLING/RENEWING ACOUSTIC COVER (N20) or 11 12 090 REMOVING AND INSTALLING/RENEWING ACOUSTIC COVER (N26)
Remove INTAKE SILENCER HOUSING

Detach lines (1) from retaining tabs (2).

Fig 1: Identifying Lines And Retaining Tabs

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (5) on intake actuator (6).

Release screws (4).

Tightening torque 11 36 2AZ .

Remove intake actuator (1) to the front.

Disconnect plug connection (2) on exhaust actuator (3).

Release screws (1).

Tightening torque 11 36 2AZ .

Remove exhaust actuator (3) to the front.

Fig 2: Identifying Screws, Plug Connection And Actuator

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.