ORIGINAL: novayusa
what the durabilty is satisfied your need? About the three flights and died, That is incredible to me.
Durability.
I have a friend who owns a slimline pitts on his DA 50. He has flown that plane for five years now w/o any issue at all. That's what I'd expect for durability.
My J-Tec had the stacks crack after about 50 flights (one season for me).
My stock DLE fell apart after 19 flights (less than a one month).
To me, a muffler should never crack or fall apart. I'd expect it to outlast the plane.