which color wire do i tie into for the air fuel ratio to work properly on the 02 sensor?

 

Our O2 sensors are narrow band, and only very accurate around 14.7:1 a/f and you shouldn't base your tuning off them. If you want to adjust your a/f with a O2 sensor, you would want to buy a wideband O2 Kit and have a bung welded into the exhaust for the O2 sensor.

Maybe you already knew this, but thought I'd mention it just in case.

Dan

 

did not know that thanks for the help