Can anyone recognize this noise? I just did a tune up and fixed a mis fire, cleared the codes and this noise started happening instantly. Car drives fine and no codes yet

 

Did you figure out what was causing the noise? Mine does something similar after replacing valve cover gaskets and spark plug tube seals (also t-body and upper plenum gaskets) except you only hear mine at open throttle, not at idle.

 

Sounds like a vacuum leak, maybe

check all yer hoses first
good luck