I recent had my maf, wb, and fuel trims go crazy. I am getting the maf circuit code, and the wb and maf are showing super lean but the fuel trims are not that bad. Is this a sign my maf sensor is shot? I tried increasing the ve and maf tables but its still going lean. Also I know noticed sometimes after the engine has reached operating temps its not going into closed loop all the time. Any help on what this could be would be appreciated.