Air flow meter?
If its the MAP sensor youre talking about, there's a resistor in the box that detects the temperature of the air flow, but I dont think it needs any cleaning...
Any turbo sifu can help me out bout this problem???
I found this problem after i redo my piping. I already have a sqv... the boost suppose
to throw out from the sqv but now it throw both like what i mean the sound...