alright in 0-40 mph my turbo works fine, from 65ish to 80, it seems to gasp and whistle initially, then boosts the car forward, but now it feels like only half of the power it use to be?

In the morning, at intial start up, if i stand outside my car I hear a belt squeling or something squeling, after its warmed up it goes away...

lastly, I notice on reverse with my windows down, I hear a clicking noise from the passenger size (wheel area maybe).....