ok lets start from the beginning... i have a 96 obd2 civic wit a 95 obd1 ls swap i had to do the jumper harness to get it runnin but yea i had a obd2 ecu in it and my air/fuel ratio meter was runnin ok and it haul *** like a champ.... but i had a CEL on b/c of the sensor the obd1 didnt have that the ecu was lookin for but yea so i get the original ecu and then drop it in now my ratio meter says rich constantly never moves only glitches one in a while... i think somethings wrong cause when i unplug the wire to my header's o2 sensor nothin happnes i think its not connected but yea help me please JDMCIVIC.COM CANT FIGURE IT OUT