I'm not a motor tech (motor head) I am trying to get as much out of my 2002 Sentra GXE 1.8 as I can, so far I have installed a secret weapon dragon intake, and a header. Now the problem I have is the o2 sensors on the 2002 GXE 1.8 automatic has 4 o2 sensors and the new header only has 2 spots for the o2 sensors In my ignorance I thought it would be a good thing to wire the 2 upper banks into 1 sensor and the 2 lower banks into 1 sensor needless to say not working so well. When the car is warm it wants to die every time I come to a stop and going thru gas like no ones business. I need help going from 4 to 2 sensors I need this car on the road. O did I tell you that I don't have the plugs on the harness anymore. They were heat damaged and I thought it would be good to replace them, I didn't now you have to buy the whole harness just for the dam plugs REALLY no one makes a universal 4 wire female plug? HELP PLEASE.