ok ive searched and searched to find a vacuum diagram for a b16a in a 89crx si. i found a few and hooked up exatly the same and my car runs worse, there is a line coming off the back of the intake manifold and every time i plug it or hook it up the idle drops to 600rpms and when its off it idles at 900-1000, and every diagram i see it says to hook up the fuel pressure regulator to one of the nipples on the map. if u have a diagram it would be very much appreciated

 

this is what I did on mine... just keep in mind that this is a dx chasis with the b16a swap and an aftermarket intake manifold... you can see on the back side of the manifold where I have another vacuum T that is plugged off... but I can't remember if I used it for something before.... perhaps someone else has ideas...
also, don't pay any attention to loose wire hanging around lol I;ve been a slacker and haven't done my alarm wires properly yet.