HI-6DSR Dual Stage Rev Limiter CD IgnitionDual stage rev limiting from 600 to 9900 RPM! New, bigger rotary switches with precise "Click-In" detents for easy rev limit adjustments. No "chips" needed. Adjusts in 100 RPM increments. New HI-6DSR (Part Number 6000-6424) delivers higher spark-gap current* than comparable digital CD ignitions! Built-in timing retard available with optional Control Module, Part Number 6000-6425. Multi-Spark CD, for race, street, up to 14. 5: 1 compression ratio, nitrous-oxide, supercharged and turbo. More HP, torque, crisper throttle response! For 4, 6, 8 cylinder with distributor. NEW! Easy Checking for System Problems! No guessing! Built-in flashing codes tell what the problem is. Checks coil, ground, power supply, loose or broken wires and the ignition unit itself! New "Plug-n-Go" universal harness included. (For vehicle-specific Plug-n-Go harness applications see here). Built-in tach accuracy check. Surface-mount, fully digital components. The most reliable CD ignition available. Exclusive Cross-Fire protection, for supercharged or turbo applicationsFully potted with new, soft urethane for heat, dirt and moisture protection. Points, Mag, or Module triggered. CARB E. O. , D-225-63 *Must use Crane FireBall LX-92 coil Part Number 730-0892 for maximum ignition output. Recommended Coils LX92 E-Core Coil Lightweight, Low-Profile, with Black Aluminum Bracket 730-0892 PS92 E-Core Coil With Bright Nickel Bracket 730-0092 Specifications Operating voltage 6 to 18 volts, reverse polarity protected, negative ground only Current draw 7. 0 amps max at 10, 000 RPM RPM operating range 12, 000+ RPM (with rev limiter disabled). RPM limiter range 600 to 9, 900 RPM in 100 RPM increments RPM limiter accuracy 30 RPM Timing accuracy 0. 5 degrees from 500 to 9, 900 RPM Multiple Spark Duration 20° crankshaft rotation below 3, 000 RPM. Maximum 12 sparks per sequence with 1 millisecond interval between sparks. Primary voltage output 450 volts Primary energy output 1200 millijoules/sequence Peak spark gap current 380 milliamps with LX91 coil, 510 milliamps with LX92 coil Dimensions 8"L x 4-1/2"W x 2"H, 4-1/2 lbs.Pit Stop USA offers Crane Cams HI-6DSR Ignition Box 6000-6424 at low everyday prices. Be sure to check out all of our products from Crane Cams including Crane Cams Ignition Boxes and Controls.