Running ruff

Hi guys so my Check engine light came on and I got two codes a 2 and a 5 some air flow stuff. Well after that the van started to run really ruff Like for example when I step on the gas the car doesn't pick up speed then its runs very sluggish like boggy wanted to cut of almost like my exhaust is backed up . Goin in for a tune up in the morning so hopefully this will all end thanks guys...

Code 2 for your van is airflow meter or ECU.
Code 5 is Oxygen meter or ECU.
Might want to have a look at the Oxygen meter. And how's the air intake hose/snorkel-maybe has a hole in it.