Hello all, new here.

i have a 2011 Silverado vortech flex fuel motor, i think 5.0 or 5.8? I forgot.
It痴 got a code for MAF air sensor, I replaced it 3 times, code is still there. bought it 2 years ago realize it takes E85 fuel and regular fuel. The first year I ran regular fuel through it, now with regular fuel it痴 sluggish, runs bad and starts bad, overall just bad. Now that there痴 a problem i run only E85 now it runs better, drives better and preforms better. I did read something about resetting the fuel computer or something. I知 wondering before I take it in if I can fix it

what I have done so far is replace the maf sensor 3 times
cleaned air filter multiple times
unplugged the battery for 2 days straight

im out of ideas. Please help
thank you