my car shakes a little during 1-2 gear changes. it feels like my intake pipe is loosen.. is it possible?

actually about a month ago, my car felt like as if it wanted to stall (05 TL Auto), but when i give it a gas a little, it came back. so i just tightened the stuff on the piping and it was okay for about a month.

I really think it is my intake pipe that is shaking..

What to do?

 

ummm look a lil closer to see if it didnt crack if it did get it welded or get a new one.