Dyno results - Tquad vs Holley vs Qjet - tuning issue, too rich

70GS455 said
It started out life as an OEM 6322 production 850 with 1.5" pri butterflies, but the primaries were modified by removing the stock 1.186" bowl venturis, opening them up to almost 1.4" and removing one booster ring
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Did you measure the vacuum signal before and after to evaluate what that change made to when the primary booster begins to draw fuel?