Low boost code

Deleted my 09 cbea it drove fine for a week then started to act weird boost wise, shortly after it threw me into limp mode. I looked under the hood to investigate and found the person who had the car before me had not fastened either side of the intake pipe right before the turbo and it had come off, I figured that was my issue but I fixed it cleared the code and test drove it, it drove fine for a minute then felt the low boost then went into limp mode. I'm stuck and don't really wanna tear too far into it if I don't have to.