I plan on fitting my AFR gauge this weekend. I bought it second hand from 5teve L ages ago...
Will it need calibrating, or is it a case of wire it up and go? I have a thread already in my exhaust which is currently filled by an old campus lambda sensor.
Also, I believe the mix to have on idle is about 14.7... and am I right in saying the higher the number, the leaner the mix, as the number is the measurement of air? And what sort of AFR should I be looking for at WOT?