Extreme horsepower applications commonly suffer from excessive Crankcase Pressure. Correcting this results in better engine efficiency and free HP your engine has been holding back.
While the OEM PCV system on the DAZA based 2.5TFSI does an incredible job at separating oil from the crankcase gases, it starts to be easily overpowered as we increase the boost and horsepower.
Extreme boost pressures can result in high Crankcase pressures. This can result in loss of power and engine efficiency under boost. Oil Leaks are common as well as crankcase pressure pushes oil past seals.
The factory crankcase ventilation system is a positive crankcase ventilated design. When under Extreme boost levels this translates to excessive pressures reaching as high as 6+ PSI.
We have approached a solution for this that retains the factory Oil separation plate while allowing for full pressure evacuation.