You've got to be kidding me.

EMS is engine management system. I was guessing you weren't running a tuned ECU, in which case the best thing you can do for the engine is run a tuned ECU, whether it's a ROM tune or full standalone - this is much more important than a catch can. Catch cans just keep oil from getting into the intake, which would cause smoke and power loss... not engine damage.

Please, please, please do some research. Read about EMS, catch cans, turbo timers (hint: waste of money), compressor maps, etc. THEN start your build.

Or do what everyone else does, half-ass it, turn up the boost, and come back in 3 months with rod knock.