a/f while cruising

[PhatGN]

what af do you guys aim for during cruising down the interstate, i like to keep it around 13.5 but am i leaving some mpg on the table with this setup, and am i not cleaning the plugs enough

 

[JC'sGN]

Low 16's while cruising ....

 

[pacecarta]

stioch on todays 93 with 10% ethanol blended gas is about 14.1 , i target 14.5 a/f in my cruise cells but leaning to 16a/f with 40deg timing is common for lean cruise mode on chips

 

[norbs]

There is no real advantage on economy past 15.7 a/f. Any leaner and you will hurt mpg as you need more throttle opening.