Just saw an old post which can increase gas range to 101 mile, unbelievable!!!
http://www.mybmwi3.com/forum/viewtopic.php?f=11&t=3888&p=34302&hilit=increased#p34302
My firmware version is I001-16-03-505, looks not old, but only display 53 mile without tank coding, even after coding tank's...