here i come!!!

ok...continue the oil catch tank talk here...

The OCT is use to trap all the engine oil that is sprayed out from PCV Valve when at high rev. Without OCT, the sprayed out oil will just suck into the inlet manifold then to the combustion. That oil will cause our exhaust to come out with some white smoke when we rev at high rpm and engine also become dirty faster.

For the mini breather filter, we just block the inlet from engine breather hose to the throtle body. This is because the engine breather can also spray out engine oil and suck into throtle body causing sticky throtle and dirty sensors.
Wira especially those with Siemens ECU is very sensitive to dirty sensors. So this OCT and that engine breather mod can helps alot for keeping it cleaner.