Originally Posted by K2e2vin
Just thought I'd add some info:
I had used the JDM O2 sensor...which just now went out. But when I threw it on with the OEM LGT ECU, I was getting crazy oscillation during closed loop. Turns out, the O2 scaling was WAY different; the LGT had a -1.3-0.74mA range vs. -13-10.9mA scale for the JDM sensor(WRX should be the same). Changed the table, and fixed that problem,
OK, so you can confirm that the JDM front O2 sensor with the short lead, for a twinscroll, gives the same readings as a USDM WRX EJ205 front O2 sensor.
Ok, I'll add that.