Quote Originally Posted by joecar View Post
Which AEM do you have...?

Does your user manual show and equation relating V and AFR...?

Or a table of voltages and AFR...?
I have the aem failsafe gauge as well. That is why I piggy backed this thread instead of creating my own. Sorry for that now, it got long...

https://forum.efilive.com/showthread...103#post210103

Here is a thread that lists the calc_pids I used to use...