[slow4doorek]

"The Rotary engine has an oil injection system that injects small amounts of oil into either the intake tract, carb, or rotor housing (depending on year/model). This is needed to lubricate the various internal seals and surfaces.

seems like mazda disagrees with your statement, and my rx8 had a lot more oil than a honda would in its combusion chamber. its about the type of oil you use, how clean it burns.

Stfu leave. A rotary doesn't even have pistons or valves kid. I've heard of people puting and oz or 2 of 2 stroke mixing oil per tank on rotaries to keep the seals lubed, that's much different than blowby under boost. And if you have a car running enough boost to actually need a catch can, I doubt a ticket for the catch can is anything to worry about seeing as it is keeping oil from being sprayed onto the road. Lol

OP's question: the more I look into it the less I think they are needed, people argue over draining it back when people without a drain never fill up their little baby cans in months. I'm in the middle of figuring out what I want to go with on my build but why risk not having one at such high boost?