for those of you who hook up the air fuel ratio, where did u tap the 02 sensor at? thanks

 

The O2 sensors on the 00-03 S2K won't tell you AF ratio. They're the old fashioned narrow band sensors that just tell you "rich" or "lean". If you want to know the mixture, most people install a wideband O2 sensor which swings from about 1-5V's and it directly readable for mixture.

 

If you are hooking up a narrow band gauge into the stock O2 sensor, you need to "T" tap in to the WHITE wire at pin #16 on the 31 pin connector that goes into the underside of the ECU.
Here is my old narrow band gauge, more commonly known as "Christmas lights". This kind only gives you a rough range of a/f.


If you want an accurate display of a/f, you'll need the wide band that comes with its own O2 sensor that must be installed in your header. Here's mine:

 

oooooh i want a wideband

i have an autometer narrowband and its all but useless.

 

now that's bit chin

 

If anyone's interested, here's the complete install on the UEGO wide band:
https://www.s2ki.com/forums/index.ph...&f=71&t=267255