You know it's temperature related, you know it started after the installation of an AEM A/F gauge, changed to an LT-1 MAF with translator and added a powerlogger. First when you get the error confirm the what the voltage reading is at the 5V wire the gauge is reading. Next buy a can of that compressed air that you use to clean computers (that stuff comes out cold) then start spraying each connection or senor in the chain until, the gauge reads normal, then you'll know where to look. Most of these problems point to a corroded connection.