Ideal for street or strip use the Pro 7 features "Smart Switch" technology that automatically switches power output on the fly. The PRO 7 continually monitors engine RPM and adjusts spark intensity in 3 stages which makes it compatible for street use. At WOD (wide open throttle) the PRO 7 puts out an impressive 302MJ - 550V. Features two rev limiters set by rotary dials and is fully encapsulated to keep components locked in place under extreme vibration. Only one coil is required for street and strip use. Use with the Pro 7 60,000 Volt coil (310-75608, sold separately).