You running a Cobb Map? The map details for the Cobb AccessPort's VF34 map are:
VF34 turbo, Stock TMIC, STi "Pink" 565cc fuel injectors, & turboback exhaust with a high flow catalytic converter.
Sounds like you're okay, though I would really look into a custom tune if I were you. And to answer your main question in the thread, the turbo is supposed to make a whooshing sound when spooling and a bit of a whistling sound when in boost, so as long as it's not whining or sounding like it's grinding anywhere, you're probably alright .
hey man sorry to bug, but im worried now. My mods are vf34 turbo, sti pinks, larger fuel pump 3" up pipe/down pipe and exhaust. Is this compatible for the vf34 map?