first things first, its a supercharger, not a turbo! it runs off of the belt, not the exhaust... the whining you are hearing is the coolest thing in the world, its 7 lbs of forced air going into your engine... yes its the supercharger. As far as the shifting, it shifts decently hard stock, but if the computer has been reprogrammed or replaced, it will shift even harder!!! If it shifts out of control and gives you whiplash every time, then the chip has been reprogrammed. Your truck may have more mods on it than you know of if this is the case... You may want to ask the previous owner what has been done to it as far as mods go.... Any more questions, this is a great place to ask!