This Yanhua MB CAN Filter 18 in 1 Benz / BMW Universal filter should be added to car after odometer adjustment for most chassis model, EXCEPT for W222/W205/W447, those 3 chassis models should add can filter before odometer adjustment.
BMW CAS4 CAN-filter is a special module which allows to adjust mileage readings in BMW F01, F07, F10 and X3 2011-2012 (with Motorola processor 9S12 XEP mask 5M48H / 4M48H – SC 66 7095 CAG). The newest version is V5.