and the fact that tunerstudio has a 'self-tune' setting that will adjust the fuel tables to match your specified air/fuel ratios.
...Buy Tunerstudio & MegaLogViewer software: $60
Buyer beware that MS3 Does not auto-tune by itself with the free Tunerstudio. You MUST buy a Tunerstudio license for that to work. That where the $60 must have gone. MS2 used to say that in the MS2 update literature until I called them on it and said you had better mention that you need to buy the license for megatune/Tunerstudio for that to work. Just an FYI. Excellent write up.