The Intake window in the engine simulator allows you to specify intake specifications for your engine.
Total intake tract length is displayed for your data.
After you fill out the Intake window, you then continue to the Exhaust, Aspiration, and Valves windows to continue specifying your engine setup.
Enter air flow, intake manifold plenum volume, intake manifold runner length, cylinder head intake port length, and cylinder head intake port diameter. The inputs are used in the engine simulator and also to calculate total intake tract length.