[Starter986]

Originally Posted by 78F350

A bit of a side discussion... In very simple terms a resonator (that extra appendage looks like an extra resonator) increases the volume of air in the intake tube without making it flow farther. In doing so it acts as a buffer for the vacuum.
In more precise language:
https://itstillruns.com/air-intake-resonator-do-12156112.html

Deeper still is the discussion of intake runner length. A few years ago I was swapping an SUV engine into a small car and noted the SUV had a much longer intake. In simple terms, length mainly effects where the torque peaks in the power curve. Longer tubes make the torque peak sooner:
https://mechanics.stackexchange.com/questions/25236/how-does-intake-manifold-runner-length-effect-the-power-curve-of-a-car

Then there's the 2000 and later M96 engines with the cross tube and resonance flap that can spread the torque peak across a wider range:

Thank you. I find a lot of value in your posts and responses.

That hose coming off the intake tube... in the yellow circle...

You can see that the intake tube wasn't modified for that hose to attach. The hose attaches to the tube, held with the hose clamp. The photo I took a couple months back... and haven't returned to the engine to see exactly where did the hose lead under the intake manifold.

Because the intake tube wasn't modified... I'm turning to the Pros: The forum members.

Thank you.