Hey,  maybe you can try this- put an exhaust splitter/turnout so that you
can use  the muffler, and if
it craps out on you, you can just open the exhaust  turnout and use
unmuffled exhaust to get back on
the ground. It would also  be an interesting exercise in how much power you
could make un-muffled.
You could also use it when  landing  at remote airstrips to  chase the
wildlife away from the runway.
Brian Trubee


Or make the bypass spring loaded so that a blockage would  overpower the
spring and open the valve.

Lynn E. Hanover

Brian,
          Don't laugh about animals on the strip, a few years back when I
still had sheep, they were all over my runway, and no amount of buzzing
would budge them. I( was in my baron with a full load of passengers who were
no impressed with all the aerobatics I was doing to try and get the sheep to
move. Luckily the bloke living in the house at that time saw my dilemma and
drove out and shifted the rotten sods, or I'd probably still be trying to
get down.  Neil.

You need to equip your sheep dog with an airband radio :)

Paul Lamar