What is this Part? causing uneven idle

[NelsonWave]

Mine started the uneven idle. I wiggled things attached to the air intake. pulling the bent aluminum thing on top to the left (pass'gr) side, it idles high and smooth, push to right ( driver) side and it almost stalls. What it this corrugated metal tube called , what is it attached to? Just replace to fix ? Photo will not rotate from upside down image, so bottom of image is top back of engine, part is the creased corrugated aluminum tube attached to air intake at bottom of pic

[wenn_u]

Hi! that is a EGR tube connected to the egr valve sensor, I am not a mechanic but as far as I understand if that is leaking you will have uneven air vacuum that can cause an uneven idle, just base on my experience and also you can trace that egr tube to find that egr valve sensor, you can clean that sensor using carb cleaner just search it on youtube "how to". it can make a difference on your engine performance as well idling.

[wenn_u]

and also I think you can fix the leak by may be by an aluminum bracing or aluminum welding. you can try instead of buying new one