If the air filter is changed with a quality filter at the appropriate interval you wont find dust in the filter to throttle body tubes or the MAF. If you do a poor quality or ill fitting filter or tube leaks is suspected.Moisture in the air and fine dust accumulates on the sensor and causes the MAF to get dirty.
The Bosch 3 wire is a self cleaning MAF.My oven is designed to be self cleaning, too. Doesn't do a great job with plastic.
That MAF won't do anything to a leaf, walnut, filter media, silicone, plastic, dirt. You get the gist. Anything other than PCV, and PCV was never an issue.
The MAF you posted is literally just a standard issue 3 wire, 5v reference MAF.
Power to the MAF sensor is provided through a pair of relays (one for power, one for the burn-off cleaning cycle),
“…..When I checked the MSDS sheets comparing CRC Maf Cleaner to their electrical contact cleaner, the only difference is the propellant they use. MAF cleaner uses carbon dioxide and the electrical contact cleaner uses a flammable propellant.
I’m with you. I’ve never noticed any change. I’m guessing I’m cleaning mine so often that they never get “dirty”.I clean them sometimes but never noticed any difference on a vehicle made after 2000 or so.