Quote:
Originally Posted by mrg666
When there is a catch can, it is recommended to install a check valve between the catch can and intake manifold (to block outward air flow from intake manifold). You can leave the stock PCV valve in place in this case. It will not be functional. See boomba check valve. |
So you are saying to not switch to the WRX valve? Why was this valve even suggested? Is it because with FI there is more pressure, so the WRX valve is designed around that pressure level? People suggested to switch why?... does it relieve pressure better with a larger opening or does it have a smaller opening to prevent excessive oil blowby through the PCV system?