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  BD Diesel Howler VGT Turbo Kit for 03-07 Dodge Cummins The BD Diesel Howler VGT Turbo Kit is a top-tier upgrade for your 2003-2007 Dodge Ram 5.9L Cummins. Designed for enthusiasts seeking better spool, increased torque, and improved top-end power, this turbo kit uses advanced Variable Geometry Turbo (VGT) technology to adapt boost to your driving conditions. How the Howler VGT Works Unlike standard fixed-geometry turbos, a VGT turbo has adjustable vanes …