How to fix a air mass flow code

I have a 2008 Toyota tundra 4x4 5.7 sr5 and I had the
engine light come on because of the massive air flow code  
so I change the air sensor but it stills comes on after when
I put a new one in and I deleted the code and I also had to
change the sparkplug to put new ones in because I
noticed when I kick into the truck wouldn't hardly get up
and go but I fix that problem now im stuck with the
massive air flow code and does anyone have any idea to
fix it i sure would appreciate the help thanks.