These MSD 6-Hemi ignition controllers fire the coils and control the timing on Hemis that are retro-fit with a carburetor or late model factory electronic fuel injection. You program two separate rev limits and have a single-step retard adjustment. The MSD 6-Hemi ignition controllers connect easily, directly to the coils, crankshaft, cam, and MAP sensors for a simple installation. Wiring harnesses for installing on factory EFI engines are sold separately.

Product Features:

• Fires Coils and Controls Timing on Hemis Retro-Tit
• Program two rev limits and a step retard
• Can be used w/Carburetor or factory EFI
• Easily connects directly to coils/crank/cam/MAP sensors