Capacitive Discharge Tech. Multiple sparks improve starting and idle. Full power output at high rpm. Easily connects to points, amplifiers and magnetic pickup distributors. Adjustable rev limiter for overrev protection. This Street Fire CDI Ignition is perfect for budget minded enthusiasts. The ignition offers capacitive discharge technology and will fire a series of multiple sparks that lasts for 20 of crankshaft rotation when the engine is running under 3,000 rpm. This ensures combustion and produces great throttle response and smooth idle. The CDI is built around a durable cast aluminum housing and easily connects to points, amplifiers and magnetic pickup distributors. There is even an adjustable rev limiter for overrev protection!