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The Dyna-Mod has more "electronic dwell" which provides more coil saturation time. This additional saturation time allows the coil to produce a hotter, more intense spark. So instead of replacing that bad module with a stock HEI module, replace it with the original Dyna-Module for a crisper, smoother running engine. Order an extra one and keep it in your trunk, glovebox, or tool kit, for  those unexpected emergencies.

DUI 4-Pin Dyna-Module

SKU: DUI-200-4PN
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