| Is the MAF genuine BMW as the cheap ones are useless, Ive heard loads of people that had the cheap ones having problems with idle etc, then there's the camshaft sensor if this is playing up,idle will get bad, then there's the crankshaft sensor, then worst case one of your cats is blocked or getting that way, a full diagnostic would show all.
__________________  UNITED WE STAND DIVIDED WE FALL 
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint! | 
