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Home >> Saab >> 2001 >> 9-3 Viggen, 4D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> TRIONIC T7 Fuel Control System >> Technical Description >> Air mass control, basic function >> 12. Turbo control
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12. Turbo control

If the requested air mass/combustion is too high to be handled by the throttle control alone, the turbo control will take over. The excess is converted to a PWM, which controls the charge air control valve. The absolute atmospheric pressure is used to correct this conversion.