http://www.e90post.com/forums/showth...vanos+solenoid try this first. Your car seems to be using a lot more fuel than mine 10.2 ltr/100 I dont know if this has any bearing on it. I would do this first & see if that makes much difference but if not it may be the Disa. Put some fuel injector cleaner through after you have cleaned the solenoids. Dont worry take your time this is an easy diy.