Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
That's the answer. These FSX planes have stealth STOL kits.![]()
"RealEngine" is a program used to more easily program and manage engine failures when the limits are exceeded. The program you might be thinking of is "TweakAircraft for FSX" where you can make aircraft.cfg changes on the fly in real time and test them supposedly without exiting FSX. I have to admit I haven't tried it, but probably should.