HPI4 - High Power Igniter - Quad Channel - inc Plug & Pins

Overview

The Haltech HPI4 High Power Igniter delivers rock-solid ignition control for high-output engines that demand more than standard coil drivers can provide. This quad-channel module handles everything from aggressive turbo builds to high-compression naturally aspirated engines, ensuring consistent spark delivery when ECU internal drivers reach their limits.

Technical Specifications

• Part Number: HT-020034
• Channels: 4 independent high-power outputs
• Connection: AMP 26-pin 2-row Superseal connector with plug and pins included
• Design: External ignition amplifier module
• Application: High-output engines requiring external ignition drivers

Why You Need This

When you're pushing serious power through an LS swap, built RB26, or heavily modified 2JZ, the internal coil drivers in your Haltech ECU can become the limiting factor. High-flow injectors, aggressive timing maps, and demanding coil packs all strain the ECU's internal drivers. The HPI4 steps in as an external amplifier, taking the low-current trigger signal from your ECU and delivering the high-current drive needed for reliable ignition under extreme conditions.

We see this regularly in the workshop — customers experiencing misfires under boost, inconsistent timing delivery at high RPM, or simply wanting to future-proof their build for more power. The HPI4 is particularly crucial for coil-on-plug setups on forced induction engines, sequential ignition systems, or any application where you're running high-energy coils that exceed the ECU's internal driver specifications. Without proper ignition amplification, you're leaving power on the table and risking engine damage from inconsistent combustion.

ECU & System Compatibility

Compatible with the full Haltech Elite and Nexus range, including Elite 550, 750, 1000, 1500, 2000, and 2500 models, plus Nexus R3 and R5 systems. The HPI4 integrates seamlessly with Haltech's ignition control strategies, whether you're running waste spark, sequential, or coil-on-plug configurations. Contact our team to confirm optimal setup for your specific ECU and ignition system requirements.

What's in the Box

• HPI4 quad-channel high power igniter module
• AMP 26-pin 2-row Superseal connector
• Complete pin kit for professional installation
• Technical documentation

Complete Your Build

Most customers fitting the HPI4 are completing serious engine builds that benefit from our curated ignition packages. Contact our technical team for recommended companion parts including appropriate coil packs, ignition leads, and ECU harness modifications. With our UK stock and extensive hands-on experience with Haltech ignition systems, we'll ensure your HPI4 integrates perfectly with your build requirements and power goals.