Hey Tcc, Im stuck on this one.

Im running a b16a1 in a EF with aftermarket headers. It has a bung for only 1 O2 sensor on the downpipe . #1 O2 is connected and not giving me any codes. However im obviously getting a code 2. I can smell a little bit of fuel/fumes. like it seems to be running rich or something, Is this because of the 2nd O2?

- Is there a way I can 'wire' this setup to run with just 1 O2 instead of welding in a new bung?
- Will somehow disabling both O2's through my ECU have a negative effect on my motor?

It's obd0 pw0 ecu. O2's are the 2 wire type.

Any help would be appreciated, Thanks!