MSD Ignition 8677 RPM Module Selector

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Dial-in your take-off rpm and more Adjustble-Turn the potentiometer to select rpm One Year Limited Warranty With this module, the user can dial-in any RPM between 1,000 and 3,000 R PM by simply turning a potentiometer. Ideal for vehicles with automatic transmissions that are using the MSD two step module selector to leave the starting line below 3,000 revolutions per minute. Show more