ok i got the b16a installed in my integra 91 rs. it runs but when it sits in nuetral the car revs up to like 3000 rpm then down to 1000 rpm over and over again. i think it may be the vacuum hoses cause i don’t know where they all go. also i don’ have the second o2 sensor because i’m using my original headers. i do however have the b16a ecu and the vtec sensors r plugged in except the knock sensor… plz help me if u know what’s wrong.