Compu-Fire Ignition System for High Compression Motors 21835 Eliminate pinging and misfire in high compression and large displacement engines Advance curves range from fairly steep for near stock to more gradual for high-horsepower engines All ignition circuits are contained in the nose cone and there is an Accu-Ray static timing LED Single or dual fire operation is switchselected, and dual sensor circuits eliminate hard starts and give accurate spark timing even at high RPM. Eight advance curves, adjustable rev-limiter (6,000 to 7,500 rpm) and two VOES modes