I had the same problem last month. 
good news is simple to fix with a replacement part part which I know is Avaiable at All 4x4 kotara near you. 
the car has two mass air flow sensors. 
the B circuit sensor is the one closest to the front of the car. 
just replace with the new part. Car should work like before the incident. 
the A circuit MAF reads the flow fir the second turbo and does less work. When you get home your like to replace this. 
good luck. 
jeff.
				
			 
			
		 
			
				
			
			
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