The rear o2 codes can be removed.

The 622 and 1637 can be turned off if the alternator and battery are working correctly.

C codes aren't engine codes.

I'll take a look at the next sd tuned truck or one here, sd tuned vehicles will have maf codes, they must in order to revert to sd after failing maf.
but there is a wrong way to disable those maf codes that will cause the pcm to not fail the maf and revert to sd.
then the truck runs like sh*t