Actually, no, there won't be any difference. As long as the PCV valve is still attached to the hose to the intake, it doesn't matter about the grommet. That is just to ensure that it pull in Crankcase air. Without the grommet means that is is pulling in air from outside the crankcase, but not MORE air than if thgrommet was still there. If you pull the valve off the hose, then THAT will increase the AMOUNT of air, which would affect the way it runs.
In other word, the PCV valve is a controlled vacuum leak....
Dennis
Hmm, actually, let me think about this. If the grommet is missing, it won't affect the PCV valve, since it's still controlling the amount of air going into the intake. However, This is a closed system, and there IS a hose coming off the valve cover that pulls air into the inlet ahead of the throttle body, but after the MAF. If the Grommet on the back of the intake was missing, it COULD allow extra air to enter the engine through the hose on the V/C, which would be un-metered air. I suppose this might contribute to a "not running right" situation, but I don't think on the scale of the pcv valve being disconnected from it's hose to the upper intake.
Anyway, when you get it replaced, let us know if it makes a difference.
Dennis
Umm...how bad would things run if the pcv grommet popped out??
It is one bad vacuum leak as the upper intake would be pulling in unmetered air from the engine bay and the TB would be pulling in more unmetered air from the engine bay baasically causing your car to run like crap. Get a new valve, grommet and screen if your ahven't replaced all three recently and things will run much better.
Tim
Excuse mee if I post kinda wiersd, Im alittle drunk (id spell intocicaTED but no way )
From what I havee seen at WOTR it will cause somr realy bad isseus. ildel will suck (wich I hace had an issue with latley). and mid range should be relitivley(sp? ) somewaht ok.
Yes I amgong to get a new grommet, wire filter adn pcv. I am gointg to the track again Tues and hope to see what happens.
thanks for the repl;ies, and again excuse the tyops....