Originally Posted by PabloCruise
If you are running lean, and you already replaced O2 sensors, I would look at the injectors.
Upstream of injectors would be fuel flow (think pump and filter) and pressure (think fuel pressure regulator).
Have you checked fuel pressure?
How many miles are on your injector?
I think you can richen things up by tweaking the AFM.
Keep us posted!
Yeah, I'm waiting to see if the cat is why I'm failing emissions then I'll work on the lean condition. The FF, FP, FPR are fairly new but the injectors are unknown age and obviously suspect.