I have a 2010 e60 545i. Does anybody else have this issue on anything other than map 1 at high rpms and higher boost? It mostly throws lean codes but your get the random missfire. Diff cycle every time. I pull over and shut the car off and restart it and the check engine light comes off Just purchased a stage 2 upgraded LPFP, all new coils and plugs as well as a tmap sensor from what I've been reading. Going in next week. Anything like this ever happen to anybody?

 

happens to a LOT of people

install JB4 and start getting misfires

there is more load on the engine with a tune than without a tune

i changed my coils and plugs right before i installed jb4 so i wouldn't have to deal with misfires,