hmm... whine or whistle? Since I did some intake work (cleaned head intakes, optimised secondary butterflies, additional 2 extrudehone passes on UIM, gasket matched LIM/UIM, TB optimise) my intake now whisles around that RPM range. I don't recall it whistling prior to those mods. I still have the factory bullet airfilter housing, so an aftermarket airfilter may also whistle... ?
Creaking from the rear.... the winter brought on new creaks from my rear swaybar poly bushings (and poly endlinks?). Poly seems to creak when cold... not sure if lithium grease with resolve that.... poly swaybar bushings on my previous cars also creaked when it was cold. A while ago.. someone posted that the rear creaks often come from the trailing arm (?) where the ebrake cable is clamped to it... and that * shaped insulator rubs...
Ticking... at idle my pcv valve or injectors tick.
