MEVD17.2 was Installed on N55 Gen1 Engines2009 – 2012Exx 1er 3er X5 X6 E88 E9x E7xFxx 5er 6er X3 F10 F07 F06 F12 F25 With power class225kw 306hp 400Nm235kw 320hp 450Nm MEVD17.2 refers to the generation of the Bosch X17 ECUBased on the TriCore TC1797 processorInternal flash memory 4MB and 64kb internal Eeprom OBD Mode - VR on Server - Write Only Calibration Area & Diagnostics Bench Mode - You Don't need to open your ECU - Full Reading & Writing Boot & BSL Mode - You need to open the ECU - Full Reading & Writing