Understood. I'm just curious that one model with a stock O2 sensor behaves like another model without a stock O2 sensor. I guess the programming is different, so just removing the O2 sensor without changing the programming, how does that help?My answer was NOT for you because of your American model.
BTW, the EJK is said to come with an O2 by-pass connector for models that need it. (I'd double check when ordering.) The California American model should have an O2 sensor since California has more strict emissions standards.