13...... Removing intake duct (N63)
WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750i, and 2015 BMW 750Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks: Remove tension struts on left and right
Picture describes the left side, the procedure for the right side is identical. Press in catch (1). Feed out intake duct (2) towards top.
Press in catch (1). Detach intake duct (2) towards rear and remove.