I'm not surprised, many forum members here only bother with their own interests. Especially the narcissistic younger generation who often own such bikes. They only yelp when they want help themselves. But only 30 members read it and ignored it!
One post like this getting missed is one too many posts.

I don't know your bike but I would guess the black pipe is to the emissions unit. The blurb I read says one pipe (from under head) to carb, one to air box.

You could also need that pipe to make a vacuum to suck the fuel or something similar which could cause your problem. Hopefully now Jeff has said g'day some of the mechanically-minded members will assist you. Sorry it took so long. Thanks Euphonius for picking this one up.