So how do you exactly determn the ratio of the misture and what gauge or gauges are used?

 

Come on someone has to be able to shed some light on this subject?

 

Burnin: air/fuel ratio can be determined by measuring the oxygen content of the exhuast. The stock O2 sensor in all modern day cars does this for the ECU. So you can get an Autometer air/fuel meter, tap into the O2 sensor and you're good to go.

The FAQ has install info.
More info here: https://www.f150online.com/f150board...ML/005798.html https://www.f150online.com/f150board...ML/006369.html

And Autotap also tells you: https://www.f150online.com/f150board...ML/006119.html