turbo quest ?

[roughneck]

i just bought a typhoon .. -93 runs great .. but when it´s cold and i drive away then i got som crasy noice in the turbo it´s "screams" but when the engin gets warm its stops .. and runs like hell ... what could cause it .. do i need to by a new one ??
if so how mutch for a stock/bigger turbo ??

sorry for my bad eng.. i live in sweden