The past couple of days I have noticed that my charger has went from the sound of gears meshing with a loud whistle to a whiny sound and less of a whistle. Cant really hear the gear lash anymore. Should I be worried. It's boosting fine.

 

Mmm fuelpump maybe? The Walbros are known to make such a noise.

 

its coming from the charger itself. I have the stock fuel pump.

 

OEM fuel pump? Bad idea, you really should upgrade it, have fuel management are you using?

 

06+ have returnless fuel system. OEM is fine.

 

If it's a SL blower, maybe change the fluid and inspect it for any signs of excessive heat (discolored or burnt smell) or metal shavings. How many miles are on the blower?

 

There are 10,000 miles on the blower. I just changed the oil about 1,000 miles ago.

 

Its not the sl charger so I would think if there were any shavings they would have been caught in the oil filter.