After driving for about 10-15 mins, turbo whines like a supercharger when it spools, around 4000rpm, beyond 5000rpm (when the turbo is spinning really fast) the whine cannot be heard.

stock b16
log mani - t3 9psi
s300
open dumptube
restrictive exhaust (cat, 2.36'' catback)

 

does it sound like a whale? cause i had that and my turbo was done had chipped fins

 

If it was a brand-new turbo, it could be defective. If it was rebuilt or is just a used turbo 'with no shaft play', then probably needs to be rebalanced. Fast-spinning small turbos that have a bent shaft or are really out of balance will vibrate the turbo and make them whine.

 

lol sorry, but at first I thought he was just referring to the typical jet engine like noise that all turbos make.

 

What kind of turbo is it? Mines does that but that's because it's a GT3076R with twin intake housing