Radorotrex, I hope no one has to see the bags "work", as in have them deploy. :-)
Of the handful of people who have these seats, I'm aware of at least one who has successfully integrated all the electronics to function as desired. These seats come in their unmodified original "Euro" intended configuration. So the airbags are not "plug and play" on US models.
2012 335i Sport, 6 Speed RWD
2006 330i Sport (sold) - 2002 330i Sport (sold) - 1996 Boston Green M3 (sold) - 1995 325is (sold) - 1973 2002 (sold)