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Home >> Nissan-Datsun >> 2016 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Engine Control System (Introduction, Wiring Diagrams And Basic Inspection) (1.8L)) >> System Description >> System >> Intake Manifold Tuning System >> System Description >> Engine Speed: Low And Medium Speed Range

Engine Speed: Low And Medium Speed Range

WARNING: This page is about a different car, the 2017 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Since the intake manifold tuning (IMT) valve is closed when the engine speed is less than 5, 250 RPM, the length of the effective intake air path is from the mouth of intake manifold collector to the intake valve. This long path brings the inertia effect of intake air, contributing to the improvement in intake air efficiency and the generation of high torque.

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