Question about Oil Catch Can

[BLK R33 GTST]

hi guys

i have bought a Greddy Oil Catch Can. I have been told by a friend of mine that it should have a filter on top of it to vent out the fumes. is this correct cause my one doesnt. does that matter?

Also i'm not sure whether i have installed it right. i posted another thread and one person said that one pipe ran off block the other to vent to atmosphere and other said that pipe runs back into the engine........like pic below. Can someone please clarify these for me.

thanks

[Fazt_R33]

filter is for not needed with a catch can, your hosing seems correct. that is the way my mechanic said to hose it...

[Guest RedLineGTR]

that setup is fine and legal (at least here in melbourne) i know that in melbourne your not allowed to setup the catch can to vent fumes to the atmosphere.

[Targa Tom]

...for a high reving engine you would take both hoses to the catch can and disable the plumb back.

Bit without the top end oil restricters in the block, high rev/boost will pump out about 1ltr/10 laps.

For street the plumb back maintains the pollution control...

TT