As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON TAKEOFF ROLL, THE NR 2 ENGINE RPM AND MANIFOLD PRESSURE WERE LIMITED TO 2200 RPM AND 26. THE TAKEOFF WAS ABORTED. INVESTIGATION FOUND A PIECE OF EXHAUST JAMMED IN THE TURBOCHARGER VANES. AFTER INSPECTION OF THE EXHAUST SYSTEM, AN EXHAUST COUPLING (BELLOWS STYLE) WAS FOUND SHEDDING MATERIAL INTO THE EXHAUST SYSTEM.