The boost timing masters allow you to adjust the amount of ignition retard from 1 degree per pound of boost to 3 degrees 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 degree retard. You can also set a boost pressure point to start the retard. There is a boost pressure port to connect to your manifold and the BTM wires easily to the MSD ignition control. Product Features:Adjust The Timing From The Drivers SeatEasily connects to your MSD Ignition.Allows you to set a boost pressure point to start the retard
