Turbo whistle

[Timbo1979]

Hopefully someone can help I’ve had a whistle coming from the turbo for a little while now but the other day it lost power and engine warning light came on I got it home and found a split in the inter cooler pipe going into the manifold. I’ve now replaced this but the whistle is still there. I can’t see any other holes and it’s starting to drive me nuts. The turbo was repacked last year under warranty and has only covered around 10000 miles so hoping it’s not that. Any advice would be greatly appreciated