RE: Kero start
There is no problem with the FADEC ECUs and we are not suggesting that people change them. We have changed to the Projet for the 160 because there are more options like telemetry and kero start.
The Wren 160 Pro will be a more expensive engine than the previous version with the FADEC. It may be possible to change the ECU for existing customers, but there will be a cost. We are looking at the possibility of retro-fitting kerostart if people buy the Projet ECU, but this is likely to require internal parts upgrading and may not be feasible.
Sara Parish
Wren Turbines