I have a 2006 MCS 6MT that has a horrible metallic scraping noise when pressing the gas in gear and in neutral. Replaced the timing chain, tensioner, and guides cause a failed tensioner caused chain to slap guides and break them. ill upload a video from my youtube as well.

 

How many miles does it have on it?
My supercharger sounded like that when it went bad.

 

Probably a supercharger my mini sounds like the ticket muncher from Chuck E. Cheese new supercharger is the most likely fix

 

Was it the SC?