I had my local independent shop check codes and it doesn't have any that would help solve the problems. I also have a carsoft code reader and it doesn't show anything worth while. I had problems with clogged cats after the Service II but I fixed that. The fuel filter was replaced after the problem started. The shop even pulled the fuel filter back down and made sure that it was the correct one because I was having problems with the cats. (The clogged cats were making the X5 have a missfire and run like crap.) That is fixed now but i am still having starting problems.