I'm sorry to hear about the lemon law not applying.
If the turbo hasn't catastrophically failed yet, then you might consider replacing it yourself. BNR supercars can rebuild the turbo with a new chra as well as inspect your current turbo and figure out what caused the failure. That would actually be by far the cheapest (and smartest) solution and considering that all of the moving parts would be replaced, you are basically getting a new turbo but recycling the housing. You would have to get an upgraded oil line to get BNR's warranty. I am partial to this option because they can tell you if the failure was caused by oil contamination. If there is oil contamination, then you know you can't just strap on another turbo.
Or you can just have the dealership replace another turbo and cross your fingers that it will not die quickly.
What oil are you using?
I went to the BNR site and they look like nice units.