> Has anyone heard of the Turbo sr22 Cirrus having this sort of problem. It
> does not have the exhaust interconnect that the typical tsio-550 has. It has

Yes. This has happened a few times in SR22TN's. Usually it occurs
right after maintenance work has been done and the hose clamps were
not tightened correctly.  The engine just becomes a naturally
aspirated IO550. I am not aware of any accidents or forced landings
associated with the event....just some minor underwear damage.

Ron