get some oil in there asap altho it may be too late
you will need to get a thicker o-ring if the bov is loose
just see if you can wiggle it, if so.. it's loose therefore buy a thicker o-ring
yes diagnosis does not always throw a check engine light... you may still have codes stored
most importantly.. block those pipes how i told you, not how you have them
i shall explain
air gets sucked in through the turbo, to the intercooler up to the 3000 pipe meanwhile the turbo is sucking the air that is in the 3000 pipe back through to the turbo due to you having it joined
i.e no air is basically getting to the engine, it is overfueling like a mofo and can't run properly
maybe my drawing will help some