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What else could be wrong that the large pump shot might be compensating for?




Really?




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I had the carb jetted on the dyno with wideband O2 sensors so I am pretty sure the jetting is right...





Jetting should be very close and likely not the problem IMO. However, there is no down side to stepping up the jets in the primary side at some point just to see, but I don't think you are there yet. Curious, do you know what changes they made in jetting at the dyno?

Is this the 870 Avenger carb?