I have a driver side one and I do get some oil in it every few thousand miles, before it I was getting a small puddle in my intake and I don't get any now. I have a passenger too and that one never has any either lol
I glad I wasnt the only one lol. I am no expert but it seems like people don't like running breathers. I didn't want to cut the intake up to add the stock piece so I added a cheap breather on the passenger side (when I added the VMP intake). Long story short I've been thinking of adding a CFM breather where the oil cap goes and a jlt oil seperator on the driver side. I've seen a few people on here who have this set up and I like it. I just don't know if it's worth it as in actually helps prevent the oil build up.
Thanks
I believe it has to do with how the air flows through the PCV system. You'll never get anything on the passenger side. It only collects on the driver side. That's why most people only run catch cans on the driver side.