What was found
PILOT REPORTED EXHAUST SMELL IN CABIN. REPLACED THE MUFFLER, MUFFLER SHROUD & OPERATIONALLY CHECKED HEAT SYS ON GND WITH NO PROBLEMS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTED EXHAUST SMELL IN CABIN. REPLACED THE MUFFLER, MUFFLER SHROUD & OPERATIONALLY CHECKED HEAT SYS ON GND WITH NO PROBLEMS.