I would like to ask if anyone knows how the cylinders are numbered in a 2006 325i E90 4-door. Is the #1 cylinder near the windshield or the headlights?
Also, I purchased a new coil, but it has a slightly different post on it where it attaches to the spark plug. The one I removed was a round tube shape with a rubber housing. The one I purchased has a sort of square shape post with indentions and no rubber housing.
Can anyone explain the difference to me?