HPI4 – High Power Igniter – 15 Amp Quad Channel Flying Lead Kit Length: 2.0m (78″)

4-Cylinder Performance Foundation: HPI4 Quad Channel Flying Lead Kit

The HPI4 High Power Igniter Kit is the essential ignition upgrade for high-performance 4-cylinder and 2-rotor engines. This comprehensive kit features the robust HPI4 4-channel module and a 2.0-meter (78″) flying lead loom. Engineered to handle 15 amps continuous per channel, this system provides the electrical muscle needed to drive high-output inductive coils in K-swap, SR20DET, 4G63, and 13B Rotary applications. By replacing the undersized factory igniter with the HPI4, you ensure that your standalone ECU integration maintains absolute spark authority for maximum detonation protection.

Engineering Principles: MOSFET Response and High-Current Looming

Modern high-boost engines require immense spark energy to overcome the dielectric resistance of the air-fuel mixture. The HPI4 uses high-speed MOSFET switching to take a logic-level signal from the ECU and pull the coil negative to ground with zero signal delay. This Analogue-to-Digital interface logic is vital for accurate Ignition Timing at high RPM. The 2.0m flying lead loom is built with high-temperature automotive grade wire, ensuring that 15 amps of current can flow to each coil without voltage drop. This is critical for builders who want to mount the igniter away from the engine to minimize thermal stress and EMI (Electromagnetic Interference), a standard practice in professional harness integration.

Operational Benefits for Rotaries and Turbo 4s

For Mazda 13B builders, the HPI4 is a favorite for sequential firing of the leading and trailing plugs. In a fuel map calibration scenario, the HPI4’s 15-amp capacity ensures that the spark energy remains consistent pull after pull, allowing the tuner to push the boost levels with confidence. For turbocharged 4-cylinder engines, the ability to eliminate spark blow-out means you can run a wider spark plug gap, creating a larger flame kernel and a more complete burn. This leads to better throttle response and more consistent power to the redline. The integrated aluminum heatsink on the module ensures that the power stage remains stable even during the most demanding track sessions.

Technical Specs Table

Summary & Includes

The HPI4 Flying Lead Kit is the professional’s choice for 4-channel ignition amplification. Includes: 1 x HPI4 Quad-Channel Module and 1 x 2.0m Flying Lead Harness. Note: Essential for high-power sequential ignition on 4-cylinder and 2-rotor engines.