what would happen if gm maf was bad

[qwkdsm2]

i got a maft hooked up on my car.....since then the car doesn't want to pull when you punch it instead it bogs down really bad then about 4.5 k rpms it will slowly start to pulling.feels like a rich condition.for sure its not turbo lag,only got a to4 b v-trim.the funny thing is it drives fine regularly,other then the higher than normal ilde when you put it in neutrual and cruise.
my translator is shooting 2 led blinks which means no mafg signal.my ? is can no maf signal or a bad maf hinder performance like this.has anyone had this problem please help.

 

[OverboostXS]

If you have no MAS signal sent to your ecu then it is running in limp mode, ( wich explains your rich condition) but normally you wont be able to rev over 3000 rpm. Dont have any answers for ya sorry but definately get that worked out before your start to damage your rings.