has anyone here ever checked their MAF readings on a scan tool? I got a new one and for kicks went through a few things and thought it was interesting that mine were reading quite different. I'm not sure which is considered sensor A and B but A was reading 16 lbh and B was at 21. Not sure if thats normal or if i have an intake leak maybe? I don't have any codes for those sensors but i do have a catalytic efficiency code (that ive been waiting for the weather to warm up before i fix) but i doubt those would be related? Would anyone know maybe which side is A and which is B?