• Easily connects to MSD Ignitions
• Adjust timing 15° from the driver’s seat
• Dash-mounted control knob allows you to adjust the ignition timing to compensate for changes in altitude, low octane gas, or heavy loads
• Increased fuel mileage & performance
• Ignition timing can be advanced or retarded to prevent engine detonation
• For use on 4, 6 & 8-cylinder engines & must be used with an MSD Ignition Control