I've just put a sr20det in my 91 s13. But when i wired the a/f ratio gauge into the signal wire of my o2 sensor i'm not getting a proper reading. The gauge goes all the way to "rich" and stays there, but the engine idles fine then the gauge reads nothing. If anyone has had this problem or knows how to fix it please e-mail me (project_427@hotmail.com)

 

rich could be possible.. even at idle.. a lot of engines run rich.
But then at wot u should see it fluctuate.. unless ur fuel map is super rich.