As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2084. ON TAKEOFF ROLL AFTER 80 KIAS, ENGINE PERFORMANCE VALUES BEGAN DROPPING. HIGH-SPEED REJECTED TAKEOFF EXECUTED. RETURNED TO GATE REMOVED FROM SERVICE. CW POWER ASSURANCE RUN FOR BOTH ENGINES IAW GE LMM TASK 72-00-00-700-802 SUBTASK 72-00-00-760-043. ALL PARAMENTERS ARE WITHIN LIMITS, N1 TARGETS WERE MET. RETURNED TO SERVICE. NO PARTS REPLACED.