PLEASE HELP. I have a 92 civic hatch with a b18a1 out of a '93 integra. Just did my swap, the motor worked fine in my other civic. The motor idles fine and revs great, the problem is when you hold the gas at a certain RPM (anything above 2500) it starts surging, below 2500 is fine though. I have been told it is my vacuum that is messed up, i bought a manual but i'm retarded and can't figure out the vacuum schematics. Just FYI the o2 feedback sensor is broke and i think it might be missing an intake sensor. I know this is a lot to work with but any help would be appreciated. I have spent two years trying to get this damn car running. Please help i'm goin crazy.