As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED MANIFOLD PRESSURE SPIKE AND ENGINE SURGE. FOUND A LOOSE EXHAUST V-BAND COUPLING AND MISSING THE V-BAND COUPLING GASKET. FOUND THE MISSING GASKET LODGED IN THE TURBOCHARGER AND DESTROYED THE TURBINE BLADES. PLEASE CONTACT ME FOR PICTURES AND VIDEO.