Edelbrock intake manifold

Can someone help me. I just installed a edelbrock intake manifold in acura RS. Now when I start my car it start to idle from 1300 to 1600 rpm back and forth. idling like a Mf. It just wouldn't stop. What can cause a car to idle like MF. DO you think it could be leak or plug in the wrong vacuum hoses or sensor problem. Plz message me back.