Thanks for your reply. I have to be honest and say that I didn't get much out of it.
What happens when I change the ignition by moving the dial?? How do I know I have the right adjustment?? I use 95 octan in the gas and the car is imported from Germany where, I guess, they use another composition in the gas. Is it something I have to try my way through or is there some kind of table saying "95 octan = KAT EZL 3".
What is the S and N short for??