BOOST TIMING MASTER FOR MSD

This is Garage Sale priced because it is a factory shipped open box item and returned that we don't carry in house. NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS The Boost Timing Masters allow you to adjust the amount of ignition retard from 1° per pound of boost to 3° per pound via a control knob that you mount on the dashboard. This way you can make adjustments on the fly to prevent detonation as fuel quality or altitude and air quality changes up to a maximum of 15° retard. You can also set a boost pressure point to start the retard. There is a boost pressure port to co