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Porsche
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1989
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911 Turbo, 2D Convertible
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Repair and Diagnosis (Single Page)
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Engine Performance
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Theory and Operation
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Theory/Operation
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Computerized Engine Controls
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Output Signals
Output Signals
NOTE:
For theory and operation on each output component, refer to the system indicated in brackets, to the right of each component.
Air Regulating Valve (Idle Speed)