A3 L4-2.0L Turbo (BPY) (2006)
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Remove plenum chamber cover - 2 -.
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Free up rear engine wiring harness at the partition for plenum chamber.
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Remove electrical connector - arrow - for Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19) before catalytic
converter from the bracket, disconnect it and lay it aside.
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Remove partition for plenum chamber - arrows -.
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Disconnect connector - 1 - from ignition coils.