EFI HP Smart Coil

The Holley EFI HP Smart Coil (part number 556-112) is a coil-near-plug ignition coil designed for modern EFI engine applications requiring reliable, high-voltage spark generation. With a 44,000-volt output and E-core design, this smart coil delivers consistent ignition performance across a wide RPM range, making it suitable for both street and performance engine builds that demand precision fuel and ignition management.

The male HEI connector configuration provides direct integration with existing ignition systems, while the compact form factor allows mounting in tight engine bay environments typical of modern restorations and EFI conversions. The E-core construction and smart capabilities enable adaptive firing characteristics that optimize combustion efficiency across varying load and temperature conditions. At 1.05 pounds, the coil's integrated design minimizes installation complexity and reduces harness routing requirements compared to traditional remote-mounted solutions.

This coil suits engine builders and technicians implementing modern fuel injection systems into classic platforms, as well as performance rebuilds where EFI tuning demands precise spark timing control. The Holley brand positioning in the fuel injection and ignition control market reflects decades of experience in engine management systems. Users working with Holley EFI standalone systems or OEM conversions will find this coil's specifications and connector compatibility aligned with contemporary engine control strategy requirements.

The black finish provides corrosion resistance in underhood environments where salt exposure or condensation cycling occurs. This smart coil represents the ignition hardware tier appropriate for serious engine management builds where consistent spark output directly impacts drivability, emissions compliance, and tuning response across the full operating envelope.