As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXHAUST COLLECTOR TUBES WERE CRACKED AND NEARLY UNDETECTABLE WITHOUT REMOVAL OF EXHAUST AND INSPECTION WITH A BRIGHT LIGHT SOURCE. IT APPEARS THE CRACKS WENT UNDETECTED THROUGH MULTIPLE PREVIOUS INSPECTIONS FROM A REPUTABLE SHOP. THE EXHAUST IS AN AFTERMARKET TUNED EXHAUST FROM PLANEPOWER.