hold on fella, you just need a new turbo exhaust housing.
or someone to rectify the one you have.
easy to change if you've got a spanner, vice, hammer and lots of patience.
you can do it yourself if you find a housing, maybe choose one that is best for how you want yours to run too.
shouldn't be more than £30-50 i wouldn't have thought for a standard 0.48 one.