Just to clarify - I believe your part number is just for the N55 engine (not applicable to the N54). Hence the date codes as well.
2010 E90 335i Black Sapphire
COBB/PTF proTUNE/Alpina/BMS Drop-in/PSS/Blizzak
Best Stock 1/4 time = 14.1 @ 99.4 at Bandimere Speedway (DA = 7,400ft ASL; 13.5 @ 103 corrected)