Thanks for the inputs, guys!

To help clear up some of the questions...

I have a Performance Prop installed.  76X88  Same prop that Ed first
tried on his plane before he cut it down to 74X88.  It causes the canopy
to come crashing down on my head!!  :>)
My intake manifold was made by cutting the stock Renesis manifold off at
the level of the secondary injectors and fabricating a transition on top
of it that has a 75MM throttle body controlling the air.  The throttle
body  shuts ALL the air off when it is closed.  I am thinking that is
not a good thing.  I plan to set the idle setting when I get it to run
smoothly.  However, when that 3" (76MM is 3 inches) throttle body is
cracked a little, the engine wants to be let out!!!  :>)
My exhaust is 3" in diameter!  A little over 4 feet long.  I am using
the stock Renesis manifold which I cut off just forward of the #2 rotor
outlet.  I welded a 3" SS 180 degree bend on it and installed a flexible
bellows then it goes out through the back of the cowl and empties just
about under the rudder pedals under the plane.  That is where the flames
were observed.
I will try some more tuning tomorrow.

Bill B


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