I am running out of ideas. Bmw told me they thought it was the camshaft position sensors. I replaced both with no change. I also replaced the fuel filter. Could it be something as simple as a fuel pump relay? any other ideas?
Does it have spark? Fuel pressure? Does it sound like it has compression? Will it run on carb cleaner? Codes? Did you use OE BMW sensors? I have seen DOA aftermarket Febi and other sensors cause people to go around and around. What diagnostics have you done?