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Thank you Ryan. That is exactly what I was thinking as I read the above posts. The larger the crank pulley the more difference in final boost between the L and the HD for the very reasons you explained. As the lower becomes larger the difference in the ratios for the 2 setups become larger resulting in a increasing disparity in boost levels as the lower pulley becomes larger. Swap on a 2.93 upper and then the pulley will be the advertised increase.
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