hesitant rpms and occasional stalling

[Miggie5]

I drive a 335i 2011 with the n55 and a while back i had 2 misfires and replaced all of my coils and plugs with bosch coils and NGK laser spark plugs. After that my car didnt start up with the rpms warming up the car then going down. Instead it goes to 1-1.2k rpms then goes up to the normal rpm warm up rate then settles. And very recently my car began to throw these codes in the pic and the too lean has been a code for a long time. But my car does the weird warm up then anytime i restart it after that it hesitates at 300-400 rpms then goes to normal idle. But when i drive and come to a stop my rpms drop to 200-300 and either stalls so i have restart it or rough idles bad. I replaced the manifold gaskets, valve cover, cleaned injectors and cleaned MAF and charge pipe sensors. I never found what the problem is even after looking in my shop where i work so thats why im on here to see if anyone knows?

[kerrit]

wrong forum - this is for e9x M3 (we don't even have MAF sensors on our engines)

[Soden82]

Wrong forum but I had an N54/N55 so I can try to help.

Could need new injectors, thankfully the N55 aren’t as expensive as Index 12s.

Check rail pressure and low pressure fuel psi to confirm that your HPFP and LPFP is operating as it should. If not, then those need replacing.

The most simple solution is that it could be a vacuum leak somewhere; check vacuum lines, and your valve cover + intake manifold for any cracks. Also check your BOV and diverter valves for leaking. The car might be reading too much air and the AFR is will be all thrown off and RPMs will go crazy.