You will need to post measurements of the center of the exits and the overall length of the pipe. I flew the Skymaster F-15 on a MW-54 mk2 on an old pipe that made the exhaust go out at an angle. We got 8 lbs on the ground, but it flew ... barely. The pipe was a one off trying to reduce the losses by using the fewest bends, did'nt work. I would imagine that with a good pipe you would loose around 1 to 2 lbs at the most.

Post the measurements we have a few pipes laying around. And if not check out www.pstjets.com they make bifuricated pipes. Also you could call Airpac I know that Eric has a source for custom pipes too.


PM me if you want to discuss further on the phone I can give you my # or I can call you.