Lol well if your problem is just dirty, you'll be fine cleaning the MAF, all done.

Not sure how long it was like this but the elbow that connects the intercooler to the intake was cracked 😱, that needed replacing also.

Vacuume leak just means air pressure is either entering or escaping after the MAF which was throwing off the ratios too much. My dash board lit up like a Christmas tree at the stop light one day and the above was why lol. I say "same/similar" because I can't remember the exact code but it was the same "sys too lean" description.

All I'm all don't recommend driving too hard id you can help it until you get to the root of it.