GoneDragRacing.com

ok , now that FAST has come out with a cheap quick read wide band air fuel ratio gauge i spen the 2 bills and will install it tomorrow to help tune my carb across the whole rpm band

only thing they left out of the instructions was what a proper ratio should be , what range is acceptable ?

i believe i remember 13.8 to 1 was perfect ??

That's cruise A/F ratio, accelleration calls for more like 12.6 or so. Needs to be fatter under max load.