mass airflow sensor

went to clean my Mass Air Flow Sensor (MAF), and found out there is such a thing as MAF Cleaner. so what is different about it? why are there carb cleaners that say they can be used on O2 sensors and MAF, and if that's the case why can't I just use the can of Gumout carb cleaner I have on the...

Awhile back I was coming home and lost power and seemed to be misfiring and blowing gas from the pipe. It threw a p0340 code. It was out of time. Put new timing belt on and got back in time. Still wont hold an idle, hard to start, runs rough and shakes like a beast. Changed the cam sensor...