I was reading on LS1tech that GM.IACDES_B and SAE.MAF do not have to be the same at idle yet in the sticky on the same subject here, it is mentioned that they should.
You would think that since they both measure the same thing they would be identical at idle. In my case they are not. SAE.MAF measures much more at idle than GM.IACDES_B and my car idles and transitions fine. BTW, I have a hole drilled in my TB blade.
So what is the general consensus? Would anyone care to explain it in more detail.