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The "feels a lot faster" and "Only 17hp" are not the same thing, you had a 44ft/lbs jump. Torque is the real number that is measured, it is the ability of the engine to do actual work. That is what you are feeling through the butt-dyno. HP is really little more than a mathematical calculation, it's not a measured force.
Did they include the air-fuel ration information or any of the computer data log with the dyno sheets? What lid are you running? Any plans to step up the MAF diameter? A little easier breathing could help that power band hang on even longer.
The print out looks like the power carries a good distance beyond the peak, almost to 7k RPM. Were there changes between pulls? Seems odd that the peak hp would be 200 rpm higher on the first pull than the 2nd and 3rd.
Overall I would say you are making very good power. Curve is smooth and the torque curve carries a long way. sounds like the combo works well. Congrats
-Tim
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