I tried to change the power value on the default Cessna 172 aircraft.cfg to 20 hp instead of 180...well nothing happen..maybe now is even more "spirited" than usual....the only thing changed is that the full power engine sound is reached already when you barely move the throttle....how this works??? Thank you in advance for your answer!!!

Forget the default 172 my friend, get ras172_fs9.zip in the library - end of story!regards,Mark

Yes but I was trying to understand why in the aircraft.cfg, bringing down the power 80% is like nothing changed.....I know that the default Cessna is horrible...that was not my point...

this site may be helpful -http://perso.orange.fr/hsors/index.html--