air fuel ratio?

[nomad]

Originally Posted by 1320racer

I've been tuning my bracket cars and others, sbc and bbc for nearly 25 years and I never used an air/fuel gauge or wide band and my current bracket car runs well in the 8's. Jet for best MPH and a richer not leaner is best for consistency.

An O2 sensor is not the end all. It's just one tool in your tool box. I use an O2 with my data recorder but, at the end of the day I'm still checking plugs and jetting for MPH.