Twice i've nearly cooked an ec120 engine(on two seperate machines) both times have been due to a faulty FCU.
Just be ready for
hit starter , hear sounds, look at t4 gauge ,nothing, nothing, nothing, nothing, oh my god! followed by a sprained wrist in trying to close the throttle real quick.
1500hrs in the things and every hour wishing i was in a squirell!