guys, just fitted a vf34 on the weekend and took it for a slow drive this arvo. I noticed it makes a slight whining noise ? is this due to the vf34 being ball bearing design ? or is something leaking perhaps ?

also, driving with the vf34, wont the standard ecu add more fuel when it picks up the extra air from turbo and intake mods ? (aps intake and front mount)

surely not everyone that does a turbo upgrade has got an aftermarket ecu ?