HELP, I have a Rossi 91 DF in a Byron F-16. I had the engine on a test stand for some tuning on the Byron Pipe when the pipe self-destructed. I have never seen this happen before. I'm not new to the hobby but i'm new to ducted fan type aircraft , and please don't tell me to go buy a turbine I would love to have one but not a Military pay check. Any help with what happen to the pipe would be a big help, the engine was not damaged.