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The air hose (air intake hose) for the Nissan Tiida 1.6 is a flexible rubber/plastic duct that connects the air filter box to the throttle body / intake manifold. It is designed to withstand engine heat, vibration, and vacuum pressure while maintaining an airtight seal.
This hose often includes sensor ports or resonator chambers to support smooth airflow and accurate air-fuel mixture control.

⚙️ Functions

1. Supplies Clean Air
   Transfers filtered air from the air cleaner to the engine for combustion.

2. Maintains Correct Airflow
   Ensures stable, unrestricted airflow required for proper engine performance.

3. Supports Fuel Efficiency
   Helps the ECU calculate the correct air-fuel ratio, improving mileage.

4. Prevents Air Leaks
   Seals the intake system so no unfiltered or excess air enters the engine.

5. Reduces Engine Noise
   Dampens intake noise and vibration during acceleration.

6. Protects Sensors
   Maintains correct airflow over MAF/MAP sensors to avoid incorrect readings.