I have been chasing this problem for so long and have spent a lot of money trying to fix this problem and I am lost. I have a 2008 bmw n54 Single turbo Garrett 3884r with port injection. Car has a misfire on cylinder 5 only in high boost and High Rpms. This only happens after 2nd gear. I have swapped injectors, coilpacks, spark plugs/re gapped, checked compression, bought brand new index 12 injectors, brand new o2 sensors, got a new tuner, and it is still here. I seriously have no idea what it could be maybe a small vacuum leak of some sort? I don’t know I just want to sleep at night lol. I am sick of trying to chase it down and blowing money on it. I will post a log below with the codes I am throwing (remember this is right after I replaced injectors and o2 sensors) car also has a SMFW
Data log