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Got any pictures of the circuit boards inside? How long has it been sitting unused? Several people have said the ECUs age faster when sitting for long periods, as the capacitors are more prone to drying out. Anything dented beyond the cover? Can you see the part # on the label? I wouldn't mind having a spare #89661-24231 ECU to try out and make sure mine isn't problematic, but knowing the condition of it is important.