Honda ACCORD HYBRID 2005 Service Manual page 287

Intake Manifold Tuning (IMT) Valve System
Engine power is enhanced by closing and opening the intake manifold t u n i n g (IMT) valve w h i c h changes the effective
length of the intake runners. W h e n the valve is closed, there is high torque at l o w engine speed. W h e n the valve is
open, there is high torque at high engine speed.
(cont'd)
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