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Old 03-03-2018, 08:19 PM   #20 (permalink)
TopgunZ
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The only way to safely use the pulley setups cupcakes is recommending is to upgrade the bearings in the head unit. If your sending it to vortech for the si trim then they won't upgrade bearings, just impeller. 928 can offer the bearings and impeller upgrade, albeit a different impeller then the one vortech uses.
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