Does the Buschur mass air pipe have the return for the valve cover vent? Can't tell in their pictures, but they are running a breather filter which leads me to believe no. I don't want to buy an oil catch can if there is no return nipple.

 

No vent return. THIS IS GOOD< as you do not flood your IC with oil, which you do daily. Get a catch can, keep your intake clean.

 

I am running the BR pipe/filter on my car. I have a valve cover breather on it and it is the best thing to do. I don't ever see any oil get slung through the little filter, so a catch can doesn't appear necessary.If I ever see even a drop, a catch can will go in it ASAP, though.

I had to use a catch can my GSX when I went with a hard compressor intake pipe. For some reason, it leaked oil like crazy through the breather.

Josh