mine isnt and I dont have a code

 

Let your car sit there and idol for a while. It will. I thought the same thing

 

This was not mentioned in your original post, but the efficiency will be less because it lacks the draw of the intake. Venting crankcase gases to the atmosphere probably violates Federal pollution laws and if caught would cause a failure on emissions tests, definitely in Canada.
Positive Crankcase Ventilation was the first pollution device fitted to cars back in the mid sixties. The amount of oil that went through this hose often caused it to go soft and fall of the connectors. A plugged valve or loose hose caused carburation problems, rough idle etc. So not running this hose back to the engine would cause problems and a CE light these days as Beaner says.

 

We I've done it on numerous obd2 cars, including our z06 without issue.
Federal emissions laws mean nothing here, we dont have visual inspections plus i dont really care for them in the first place.

Crankcase pressure will force everything out of the motor into the catchcan, the vent back into the intake tract is an emissions strategy, combined with air injection and egr to lean the exhaust gasses out.

 

[quote=Infinite].....
Federal emissions laws mean nothing here, we dont have visual inspections plus i dont really care for them in the first place. .....
quote]
You have more time left on this planet than I do so when your grandchildren are born with three heads don't blame my generation, just pretend your kid had triplets.

 

im trying to avoid having children, lol