A/F Tuning

[Bob's Garage]

My dyno A/F WOT is running around 11.2 I would like to raise to 12.0 to 12.2 I am using EFI live as my tuning tool.
What specific parameters do I edit to raise the A/F ratio?

Thanks in advance.

[Scoota]

Hi Bob's Garage,
The variables you need to look at are under Fuel_Mixtures; in there you will find the {B3681} PE Modifier Based on RPM. On some of the earlier model these figures are set as low as 11.3.1 AFR. Once you have set these parameters to your desired setting, then it's a matter of setting your VE’s {B0101} under Fuel_Airflow.


Cheers, Scotty.

[dfe1]

Air/fuel ratio under wide open throttle is largely a function of the base and Power Enrichment (PE) fuel calibrations. However, there are a few other variables that enter the picture. One of these is Converter overtemp protection. Before you start tearing your hair out, go to the "Catalytic Converter" folder in the Navigator window and disable Catalytic Converter protection (B0701). Then you can tune PE fuel to get the A/F ratio you're looking for.