Carb tuning, larger accelerator pump nozzle?

Bewy said

An O2 sensor doesn't defeat the laws of high school physics.....
What you said above in post 73 exactly contradicts what you said post 69.

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Did you read post 73? Let me say it again. In normal tuning cases a: bigger MAB will delay the start of the mains and make the fuel curve leaner at higher rpm and a smaller MAB will delay the start of the mains and make the fuel curve richer at higher rpm.