
Hey - what's all this 'I remember flightsim when you had to feed punched cards into a clockword powered machine' stuff as soon as my back's turned. Calm down boys - it's only a commercial ;) (Doug will know what I mean I'm sure..)
Anyway, as I mentioned, I think everyone is wasting their time here.
When working on AI helis I've changed the engine type in the air file to 3 but I still get the engine sound from the aircraft the air file was originally taken from.
So unless someone can come along and tell me how, my experience is that you can't change the engine sound. It's linked to the air file used for the AI. Somehow the AI aircraft recognises the air file (let's face it, there are sooooo many unknowns and M$ have ignored all the zillions of requests to tell all about the air file) and it's not editable at present. I guess some day someone will discover the variable, but so far we don't know what it is.