Won't be air flow meter with AUtronic, you need to check you plugs, leads, and coil. Then put them back if their fine, and take it to a workshop and get them to check your fuel pressure and flow and your crank sensor output waveform.
I've given you some suggestions, you need to take it to a workshop.

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F.B. Racing
01 WRX (STI badged)
2010 XR5 Focus
06 Impreza Hatch 2.0i