No imagination Maybe Just a perception I see from the posts..
I can tell You that the heat energy is what drives the turbo but of course more heat will end its useful life much quicker it still is the driving factor none the less. This is the reason so many want as short of exhaust track as possible to keep the heat in there before it has a chance to dissipate threw the metal. So sometimes these tuners are using wraps etc. I for one am not but the question was can it be done YES it can. Is there potential problems yes just like using aluminum rods in dragsters but benefits.
None the less craig No hard feelings just trying to answer as completly as possible as I do have something to share on the subject..