Download 2011 Bmw 335I Fuel Pump Issue Images. Bimmer magazine in their february 2011 issue has a great article on this problem. Mechanic says those power issues can be glow plugs or injectors it's also.
Car is 2013 328i with ~50,000 miles.
Replaced fuel pump relay, no change in characteristics. Bmw is recalling over 70,000 cars worldwide for problems with the bosch fuel pumps, the fuel pumps that just caused nissan to recall 95,000 crossover suvs. This is an antifreeze ratio of 50% antifreeze and 50% water. The 8 most common bmw n54 135i, 335i, 535i engine problems.