The HyperSpark ignition box improves starting, overall drivability, and in some applications fuel economy by delivering consistent, evenly distributed spark. It is designed to work with Sniper EFI and pairs with other HyperSpark ignition components for maximum performance.
Specifications:
- Brand: Holley Sniper EFI
- Category: Ignition
- Color/Finish: Black, powder coated
- Part Type: Ignition Control Module
- Product Type: Ignition Box
- Low Key-Off Current: Less than 150uA (safe for storage vehicles)
- Part Number: 556-151
Sealed and powder coated for protection in the engine bay, with an external diagnostic LED to help verify system health at a glance. Momentary protection against sudden voltage spikes during a jump start is built in.
FAQ
What is the HyperSpark ignition box designed to work with?
It is designed to work with Sniper EFI and other HyperSpark ignition components, such as the matching HyperSpark ignition coil.
Is it safe to leave connected during long-term vehicle storage?
Yes, it draws less than 150uA of key-off current, which is low enough for storage vehicles.
How is the box protected in the engine bay?
It is sealed and powder coated for protection from heat and moisture, and includes an external diagnostic LED for checking system health.

