Very interesting Geoff, I always do that anyway, on my new Wren 160 they instruct you to do just that (Projet ecu).

The problem I have is that on one of my jets I use the new Jetcat I/O charging socket and it would mean unscrewing that and unplugging the lipo as my ecu is buried beneath the radio tray, a pain.

Mind you I would not operate any of my models without a fuel tap, at least if the worst did happen no or very little fuel could get to the turbine,

Thanks for the info,
Gary.