Any body tried this yet???

three said:
Are you sure because it says you can change it.

You can change it but the gizmo can't change it.

The AFX measures and displays air-fuel ratio (AFR) from 9.00 to 16.00. It demonstrates superb response and accuracy within 0.1 AFR. The air-fuel ratio information can then be utilized by the user to make fuel delivery adjustments to the vehicles carburetor, mechanical fuel injection, or programmable electronic fuel injection system

In other words, it tells you what the ratio is so you can adjust other things in the system to change it.
 
Ok so that reads it and also allows me to change it using the little control module that comes with it.
 
No. You're not getting it. That allows you to read it but you have to use alternate means to change it. It doesn't interface with your vehicle's computer, it just monitors your a/f ratio.
 
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