[Zackman218]

I own a 2011 BMW 335i e92 6mt with N55 engine currently running Jb4 and MHD BEF. Recently i have come across a extremely rough idle and weird bogging and stuttering while driving i also noticed after a cold start and attempting to drive my car stalls extremely easy and im 99% positive it is not user error. after the car warms up the stalling issue goes away. I also occasionally get flashed in to JB4 map 4 for running to lean. In occurrence to this i have replaced all spark plugs and coil packs. I walnut blasted, replaced my HPFP, replaced my upstream o2 sensor, cleaned all 3 MAF sensors, replaced my pcv valve, and just finished replacing my low pressure fuel pump to the walbro 450. I have a log of a 3rd gear pull from 2500rpm to 7000rpm(which wont let me upload the file) and also have a video of my extremely gross cold start. I have gotten no codes what so ever. I usually would go to n54tech for my issues but for what ever reason i get absolutely no response from anyone. im very confused and im complete lost on what the issue is from. Ive replaced pretty much everything in my fuel system and the same problem is happening.
im desperate for some help and guidance and since n54tech isn't responding im forced to go here and a few other forums. any help is much appreciated thanks!

n54tech forum post:
https://www.n54tech.com/forums/showthread.php?t=57982
YouTube link:

[Kennybruv]

Definitely seems like fuel injectors my guy.