a friend of mines builds v-8 and i got him into rotorys lol and i asked him about the e-vac set-up he said it removes pressure from the engine threw a vaccum effect due to the vaccum from the exhaust....now has this everbeen done to a rotory and would it help and or make the engine run better.

people told me just get a catch can...i never understood how a catch can works, so hey help a fellow rx owner out.