PCV valve? Check valve? Both?!

[d0n_3d]

Guys I need to determine if I should run the factory PCV valve setup...or take out the valve and replace it with my check valve...OR run them both together (pcv first and check valve after)...

I tried running just the check valve but the rubber grommet hole is too big for the check valve to squeeze into...any comments and what setup is better???

 

[MistaScott]

You should run both if you are running huge amounts of boost (20+ pounds). The check valve itself doesn't perform the PCV valve function to my knowledge. It is solely intended to act as a backup to the PCV valve in preventing boost from pressurizing the crankcase.

 

[d0n_3d]

ttt

sounds like i should do both...any other comments???

 

[Wicked]

I run both with 20# of boost with no problems.

 

[turbo nasty]

Run both and no worries

 

[6SENSE]

I run in excess of 20# and always used both. When chasing down high BLMs I removed the cv. Then when the BLMs were staying a little low recently (110-115) I put the cv back into the equation and they went up into the 120's. At least it helped with that