Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Variable Induction Control Valve: Description and Operation
Intake Manifold Runner Control (IAB) SystemSatisfactory power performance is achieved by closing and opening the Intake Manifold Runner Control (IAB) control valves. High torque at low engine speed is achieved when the valves are closed, whereas high power at high engine speed is achieved when the valves are opened.