Within the next couple of days I will be firing up an OS140RX for the first time. I will be using the Aeroslave CF pipe set to 31" from the engine exhaust flange face to the rear of the pipe (not including the stinger/outlet pipe).

I will be flying it on the weekend. My last years plane had an OS160FX with the same Aeroslave pipe, so I will report back with a comparison of the two. The OS160FX on this pipe made great power.

JB

PS. I would imagine that the 4 stroke pipes would probably only work like an expansion style muffler and would NOT allow the OS140RX 2 stroke to develop power to it's full potential . . it may even reduce the power. Performance 2 strokes need a properly "tuned" pipe to work at optimum.