Ive had my hybrid td04 swapped for a VF34 on my bugeye.Had all my belts changed at the same time.However,i can now hear a noticeable whining sound when(i think)the turbo spools up and down-sounds like a quiet supercharger whine.Am i just not used to it because of it being a roller bearing turbo???

 

Could be that its a new turbo for your ears to get used to alright. Do you have an induction kit?