Best AFR for consistency

Consider the weather stations that predict your next run simply based off of weather change. Good historic data in your log book would help you do the same. Running your incrementals when you cut someone in will help your next round dial too. Trying to re-jet will probably bounce you around since you can’t pick jet size by tenths. Do your best to keep engine and trans temps the same round to round…sometimes I drive through the pits or stall up on the converter in the staging lanes after a long delay. If your car isn’t very consistent in the first place it probably isn’t the AFR. All that being said, you gotta find the AFR that your particular combination runs best on…mine likes 13.2 at WOT in high gear. I run sniper injection with learn and compensation turned off (just have the fuel table locked in), basically a smarter-ish carburetor. And I just dial based on conditions (like all the folks are saying).

I use these two calculators a lot:
Calculate Air Density Index- Wallace Racing
Calculate ET Change From HPC Change- Wallace Racing