Mitsubishi manufactured the bi-twin turbo charger for the N54 engine, not sure if they are suppling the twin scroll for the N55 which is in the Xdrive 35.
2015 X5 50i M Sport- On order
2015 435 Cabrio M-Sport ED (9/2014) On order
2011 X3 xDrive 35i M-Sport (6/2011 PCD) Soon to be retired.
2011 335is Cabrio ED (9/2010)/PCD (12/2010) Soon to be retired.
2007 X3is PCD (1/2007)-Retired
2007 335i Cabrio PCD (6/2007)-Retired
2004 328i Cabrio PCD (3/2004)-Retired
BMWCCA Lifetime Member