Thanks, guys... here's hoping ;)

Just for my future knowledge as I am pretty ignorant when it comes to these types of things; what is the MAF?

mass air flow sensor which is in the air intake by air filter housing you will see a plug connected to it.

Maybe I'm wrong but if you have that many codes it would be prudent to
get your indy to hook up the computer for a proper readout rather than
guessing then go from there.

^He did have them read, and they are related codes.
IMO, he did the right thing. No need to get a mechanic involved yet.

Sometime having the CEL or SES read by BMW specific software provides a lot more info then just a generic OBD II code reader.

Maybe I missed something but I don't see where he had them read.:dunno: So my suggestion still stands.
Let's not guess. Once he knows what the problem is and the OP get his finances together he'll know where to begin.

^Thread title states the codes, so I assume he did. Unless he can look at the SES/CEL and tell what codes are showing.

As I understand this all is well?

I seem to 'foul' MAFs fairly often I guess due to my setup. Several times the engine was acting up and I really couldn't tell the MAF needed cleaning but it worked fine after I did. No discoloration, looked shiny, only clue was it looked shinier after the cleaning.