im semi new to the catch can. ive never used one to vent the crankcase only the valve train. im running a built b18b1, on 5psi as of now, and a turbonetics t3/t4 turbo. The engine was rebuilt, but im getting smoke, its oil and not sure if it is coming from the turbo or the motor. A few things i am planning on trying are, installing a catch can (ive searched some, but didnt find anything too useful, im unclear on how to ventelate the crankcase, and another is im replacing my tial BOV with the HKS ssqv, and further more i will be replacing the turbo along with the drain and adding a restrictor to the feed. These are the only solutions i could think of, other than replacing rings or valve seals. anyways in a nut shell does anyone have any ideas or am i in the right direction and a write up on the catch can would be great. thanks to all who help. i spent alot of money on this motor and the smoke really pissed me off.

 

find where the smoke is coming from. Oil pan has a way of leaking oil onto DP. HKS for Tial BOV is a bad move to me. Search oil catch can B18 and you'll find how it is routed. Or ask a performance shop or have them look at your car. If they know their stuff they can help you out.