As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT NOTED A +5 DEGREE ON POWER CHECK AND AT TIMES DID NOT FEEL THAT THE ENGINE WAS PRODUCING FULL POWER. UPON REMOVING THE ENGINE INLET COWLING A 1.7500" PIECE OF TUBING WITH A 90 DEGREE BEND WAS FOUND INSIDE THE INLET SCREEN AREA ON THE SCREEN FLOOR. THERE WAS DAMAGE TO THE IMPELLER ASSEMBLY AND SUPPORT HOUSING. THE TUBE SECTION WAS BROKEN OFF OF THE EJECTOR NOZZLE ASSEMBLY, PN 23084996 CONTAINED WITHIN THE EJECTOR TUBE ASSEMBLY.