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.
pls check here,friend
/upload/pro/cas4-filter-pinout.pdf
have a nice day!
marshall