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Hello, my name is Bobby. Thank you for the question. From what you are explaining it sounds like the turbo is the issue here. If the turbo is making noise and you are having a lack of power then the turbo may be failing. If the turbo was not replaxced with the new engine then it can easily fail due to debris from the old engine. Was this replaced at the same time? Either way you need to take it back to where you had this done.
It should be fine to drive back to the shop.
If you need anything else please let me know. Please rate when you can also. Thank you.