hey ..i have 550i and after 1000rp on each drive i have jump rpm (jump around 300rpms)and back and jump and back when i push the pedal a little bit......the car doesnt drive faster and if the rpm are lower i hear that noise....scratching noize......what i have to doo......what i chave to check first.....maybe somebody know some shop who can check whats happened(but not dealer) im looking somebody who knows something on bmw but not dealer.....i living in chicago
sometimes if i push that gas pedal all car start shaking and than i push all the way and car change drive to lower one and start going faster but i still feel the shake

 

Any check engine lights? Seems like an air problem. Check and clean ur maf with air cleaner. U may alsonalso need spark plugs. Do a quick tune up

 

What u mean ur maf??1000 miles ago was good rpms....maybe I have ro check that plugs...no service engine light

 

hey there i have a 530i and my problem is very similar to yours like if im at 1500rpm the rpm keeps jumping up i dont know what causes this do you guys think its the maf ?