The flap could easily be pushed from side to side the motor was not working at all. I also notice my car seemed to idle at higher revs & gradually slow down when I just stopped it just runs even all the time. Im glad I did it & i think quitye a lot of these cars have this problem but the owners dont know. The DISA itself was very clean when removed no oil or gunk so I believe the unit motor itself is the problem. I purchased the disa from
http://www.oembimmerparts.com