Strange sound on boost

[chief-long-shin]

his has just happened today and i'm a little concerned about it.

When the car is on load and the turbo is spooling up not only do i have the normal whistling sound of spool up i also have a really sound of something that sounds like an air leak or someone letting down a car tyre.

Really confused as there;

is no smoke.
Seems to be constant boost
Doesnt appear to be slower " could be wrong"
Cannot locate any holes on any of the visible pipes and nothing seems to be off.

Car is an EP91 Glanza and bog standard under the hood.

Just concerned and want to get this sorted before something happens - was worried i have a fooked turbo blade or something....

Doesnt sound like a blowing exhaust either.

 

[gv1.3]

have you checked where the intake pipe goes on to the turbo... there is a rubber thing around it and it came off mine and was making very odd sounds on boost.

PS: I hate going near that pipe as its a swine to get on and off.