[sae.ekiicii]

So I got a 2011 335i n55 and in high gears and speeds, if I do a pull my car starts stuttering and shaking. If I continue to accelerate after a while the engine starts misfiring and I hear some noises which I believe are knocking. The car turns back to normal when I turn it off and on again. Here are the codes I got after this happened.

[Justcallmeace]

i noticed the same in my 320i E93 2008. When in 3rd gear, it stutters and shakes. The other day I tested it to see what happens and then the engine started knocking / ticking for about 10 mins. Taking it to a specialist next week, will let you know what he says.

[PhaceN52]

I'd start with that "Oil pressure too low" and "oil pressure sensor" if you don't wanna kill it, does the red oil warning light up on the dash too?
Check the connection of the sensor and change it, part number for N55 12618611273, it's a 10 dollar thing... Totally the first thing to rule out before the rest
Did the engine ever ingest a belt?

[sae.ekiicii]

I just replaced my oil pressure sensor and no I never got that red engine light. For the belts, I don’t think it did. Well at least not during my ownership which has been over a year since I got the car.

[PhaceN52]

That's good, so leaning towards something electrical maybe
Seems like some N55 cars are suffering from BDS line problems, check here
https://www.e90post.com/forums/showthread.php?t=1536431
https://www.e90post.com/forums/showthread.php?t=1532529
they talk about coils, reseating fuses on the terminal block/checking battery voltage/ground straps
How healty is the battery, is the car tuned?

[sae.ekiicii]

I think it has been flash tuned by the previous owner but probably stage 1 or something. The car doesn’t feel too crazy.