Performance Distributors S000222 DUI 4-Pin HEI Dyna-Module
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Q & A (1)
What's in the Box
For a crisper, smoother running engine, replace your stock HEI module with the Dyna-Mod. The Dyna-Mod has more "electronic dwell" in it to provide more coil saturation time. The additional saturation time allows the coil to produce a more intense spark. All D.U.I. distributors are built with this module.
Fits 1974-Up (w/o computer) GM HEI distributors.