i just put in 3 new o2 sensors, new mass air flow and had to replace some wiring going to it from the fuse box, new spark plugs, fuel regulator and fuel injectors.

at first it wasjut running lean in system bank 1 and 2 if i remember right, i took it to a garage to have them check everything, they said fuel filter would fix it. i go pick up a filter, put it on, still doesnt help, then it starts feeling like its misfiring, get a code read,and it is also misfiring.

ive been going in circles and either the problems arent getting fixed or new are surfacing. anyone able to help me figure out why i could be running lean?
i was told it could be my air filters dirty, but i dont see that being reason

 

no help guys?

 

how do you know its running lean? whats the air fuel ratio? my car runs at 14.7 but thats because its full bolt ons with stock tune