I don't have any code related to the maf, only the egr (because it's deleted).

The symptom is power loss under load. For example i floor it to merge on the highway, let of the gas, then floor it again and nothing happens. The car downshift but doesn't rev/accelerate.
Also have another issue with same scenario, except when i floor it, it hesitate to downshift for couple of secs with a rattling/ticking noise, then accelerate normally but with a little more black smoke than usual..