The MAF is the car uses heat transfer to measure the mass of air ingested by the engine. The rods at the back of the MAF and electrically heated, then cooled by the incoming air stream. The air temp and the temp of the rods is used to calculate the mass air flow by the computer, more air flow cools the rods more and etc. This is use by the computer the meter the fuel. The screen on the MAF is not to calibrate the MAF but as a last line of defense to keep crap out of the engine. The calibration is in the computer. Mass air flow sensors are sized to the throttle body.
Other car makes use a VAF (volumetric air flow) sensor which is a spring loaded vane in the air stream. The more air the more the vane move backwards. The computer then uses the air temp, looks up the density for air at that temp, then with air volume calculated mass.
This system add the most restriction to the air stream to get the same data.
Sorry for the long post, but if you have a good CAI and are comfortable that no matter can get through the filter, remove the screen. If you are not comfortable don't the power difference is minimal
Hoen Lights, New Era Intake, YELLOW interior badge
Now: Running with the Devil!
YELLOW calipers and rotor hats with pads (brand undecided)