I read cryogenics treatment process many moon ago and read so many pros and cons. I sent a billet compressor, turbine wheels and turbine housing of a turbochargers to a company in Alabama that does this process. For the turbo to survive a heat that can reach as much as 1500 degrees, you need to find a turbine housing that has abundant properties of nickle. It's not cost effective to spend so much while the inferior product "made in china" turbochargers are flooding the market. Not too many cryogenic company out there and i'm sure the cost of this process is staggering. So, the availability and the cost of this process to regular enthusiast is unreacheable...for now!
For the meantime, until the government regulates/curve the fake-fraud made in china, i will not spend a dime.
Someday, I love to see "made in the USA" back in the shelves.