On set up after say a rebuild or replacing a pump or battery etc, the FADEC instructions suggest for your first run, to teach the ECU.

Max speed: 160000 RPM
Idle speed: 45000 RPM
Stop speed: 28000 RPM
Max temp: 800 C
Min temp: 100 C
pump start point: auto+0
Start ramp: 4
Acceleration delay: 120
Deceleration delay: 30
Stability delay: 4 to 6

At these setting with slow throttle control there should be no flames but a few splutters until things settle in. If you have flames at these settings you'll never fly and may need to investigate the internals again.

I am assuming this is fairly standard for anyone running a 54mm turbine first time. What version date are your FADEC instructions?

Paul