I don't think you will find many people saying that a wideband reading of 11 or less is not pretty rich. That said, there is very little to be gained from fuel tuning. So a partly rich fuel setting is good because it is also a means of protecting your motor. You will find people happy with afrs ranging from 11.7 down to 11.1. It is my uneducated guess that anything much less than 10.9 is off the chart fat. Since road race said different, go with them.
My point is the difference in performance between 11 or 11.7 is nominal. The difference two or three degrees of timing make is hugh. So make sure your fuel stays below 11.5 or so, once you are into teens boost, you should be good to go.
My point is the difference in performance between 11 or 11.7 is nominal. The difference two or three degrees of timing make is hugh. So make sure your fuel stays below 11.5 or so, once you are into teens boost, you should be good to go.