Tiburon gt 04 problems?
 

I have a Tiburon gt 04 I had a new clutch and pressure plate installed and when I drive sometimes even on bends tilts and corners I hear this weird whirring longing noise like something's spinning. Then it goes away next day then comes back. I read online this could be air in a pipe not bled or water pipe damage? It usually happens when I'm slowing down or rolling low speeds. My clutch pedal also clicks sometimes when I come off of it which I hope isn't a major issue .
Today when driving up the street I heard a brrrr weird vibrations and my car stuttered. Then did it again then never did it again today. It was in first gear when I revved to 4000 range. After that my car sounded different so I looked at exaust and my right side was lower than left. My car now sounds louder and rougher I think my muffler or exaust loosened? I plan on getting a cat back soon but wondered if anyone had any ideas? Detailed answers would be very helpful and will get top rate. Thanks

I'd start by going back to the shop that installed the clutch and telling them.