As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS INSTALLED AFTER 4200 HOUR CORE INSPECTION. AFTER 2.6 HOURS OF OPERATION, THE PILOT EXPERIENCED SLUGGISH RESPONSE TO THROTTLE CHANGES. THIS WAS A PROBLEM IN TRAFFIC PATTERNS BECAUSE OF AIRCRAFT YAW WHEN POWER CHANGES RESULTED IN SLOW ENGINE RESPONSE. REPLACED ENGINE FUEL CONTROL AND PROBLEM WAS SOLVED.