I am currently running a ZDZ 50NG with pitts muffler in a Vision. Model is 15 1/2 lbs and I am getting a solid 7500 on a 22X8 Menz S. I would like a bit more poke so I am thinking of putting a tuned pipe/mini pipe on it. Has anyone any experience of pipes/manifolds with this engine? It has to be suitable for 3D and faster stuff as well. Any info would be much appreciated.

Thanks,

Angus