I'd like to know how beneficial the use of a wide-band O2 setup been to your carb tuning efforts? Did it lead to solutions of problems that would have otherwise not been identified, or did it simply speed up the process where you would have found the same end result without it? Did it result in your tuning taking a different direction than you would have expected / tried otherwise?

FWIW, I do have one, but haven't had an opportunity to put it into action since purchasing it.