i have to try to get this thing thru emissions tommarow ,i have a d16z6 swap in a 92 civic hatch VX,and its running rich,with a little black smoke coming out the back,i unplugged the o2 sensor and put the stock ecu chip back in ,it runs better,and its not throwing any codes yet,im not sure if the sensor is bad or if i need to convert this 5 wire to a 4 wire,any help would be really cool!!! thanks

 

what ecu where your running before?