[Calebmoore]

Hello everyone I have a 2005 325i sedan m54 engine that is throwing bank one and 2 lean codes I have a new fuel pump new fuel filter new disa new MAF sensor new spark plugs and new post cat o2 sensors and no vacuum leaks ( I have smoke tested it 100 times) it has a rough idle after I’ve been driving for 5 or more minutes I have a janky cold air intake that is probably a hot air intake but I can’t seem to get the codes to go away any help is appreciated

 

[Calebmoore]

What brand for disa and MAF? Does the car run better with the MAF disconnected?

DISA and MAF were from autozone. The car runs the same with MAF disconnected.

 

[Calebmoore]

What is this?

Come on, post your codes and we only study them and promise not to steal them.

They are p0171 p0174 or what ever the lean codes are