50,000 Volt E-CORE coils. Flame-Thrower E-Core coils feature optimized winding design to maximize spark gap current and available voltage. When teamed with Flame-Thrower ignition modules they produce 100 percent more energy across the spark plug gap (during a one millisecond burn time) compared to the OEM coil. Select one of our matching Flame-Thrower ignition modules for a performance proven combo.