Quote:
Originally Posted by jamesm
I put a check valve between my intake manifold and pcv valve this afternoon. i did it as a precautionary measure, so that boost pressure wouldn't be pushing back against the pcv valve, and because i've read that they can leak boost. I've never used one in the past so this is my first time trying.
After i installed it and went for a couple WOT runs i noticed my peak/warn boost gauge was flashing red at me. uh oh. the warning is set at 8.5 psi, and the recall said that's what i hit. the car has a hallman pro mbc, but it's set all the way out, running off of (7psi) wastegate spring pressure. prior to this, i would peak at around 7.5psi or so. Call me crazy, but it sounded like the turbo was working less hard under boost as well, like less intake sound. That part may be my head messing with me, but i swear it sounded different lol.
Also, my breather just vents to air until i can find a good catch can solution, and before i would notice a bit of oil accumulated at the bottom of the hose. after the run with the check valve there wasn't any oil there.
i think this means the pcv valve may have been leaking boost. am i crazy? stupid? correct, maybe? |
Can you take a pic of your setup, so I can get a visual on how it is setup? I do agree that especially with MBCs your boost can easily change by 1 psi from day to day.