I have a jdm b20 from a 97 so it uses o2 sensors but the wiring harness is from a older b series that didn't use o2 senors. The car is running really rich. I know I need how many o2 sensors I need and where they'd need to be my header it has multiple bungs.

 

which b series didn't use o2 sensors?

 

 

I'm really not sure any one know where the connectors would be on the harness to see it it has them. That's just what the guy told me.

 

4 pin square connector

no car information
no information on the wiring harness

 

Thanks

 

Oh you're very welcome.