Being a young driver im not that experienced but I have driven a few cars and to me shift changing in the BMW is the most difficult to get used to. All my passengers lunge forward when I shift from 1st to 2nd if I dont very carefully release the clutch. Now from what Ive read its either the Guibo or CDV Valve or my sh*t driving :shhh: However does the E46 318i Have the CDV valve because according to some websites it doesn't exist on my car. Ive got the car on ramps at the moment looking at my Guibo and it looks fine I could be wrong though. Can you physically examine it from the outside ? Hopefully its not something to expensive to fix if there is something wrong I'm a really paranoid type of person and I just want to find out if i am being silly.