my screen is removed and my stock mas is honed , and it does not not affect performance in a negative way . it is ok to do as long as you have proper filtration of the air entering the engine , the purpose of the screen is to protect the tiny wires inside of it which measure voltage. the turbulence is not necesary because the sensor does not measure air frequency like some mas's do. electricity travels through the wires which heats them up and the incoming air cools it down , the more air that hits it , the cooler it gets , and more fuel is put into the engine . i also datalog my runs and i did not notice a difference in air fuel ratio . you can hurt your afr if you move your mas to a different location , or turn it . just my 2 cents .
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