I own a 2nd. Gen. integra and I'm rebuilding the engine. When i was removing the intake manifold I noticed a "box" type thing and I'm not sure what it is but there are two hoses going into it. One hose comes from the crankcase and goes into the box and the other hose, that was never hooked up, goes to the bottom of the intake manifold. well, my question is since that hose was never hooked up would that be why the engine never idled very smooth and what other problems could that cause or is it not that big of a deal....Thanks