When doing some transmission work during the weekend I pulled both MAFs and cleaned them thoroughly using MAF cleaning spray. Didn't seem to change a thing
Still I get the EGR insufficient flow MIL warning when revving the engine and the air mass measurements are off.
Haven't dropped the MAFs yet. Can it be that the requested flow should be the sum of the real bank 1 and bank 2 flows? If yes, then it might be that things are OK. If not, the MAFs are definitively bad.