4‑Channel IGBT Coil Driver for ECU Logic‑Level Spark Outputs
If your ECU has logic‑level ignition outputs but your build uses standard / “dumb” inductive coils (no built‑in igniter), you need an external ignition driver. The AMP QuadSpark V2 adds four independent ignition driver channels in a compact, motorsports-friendly package—so you can run coil‑on‑plug (COP), DIS, or wasted spark without changing your ECU.
Why QuadSpark
- Drives up to 4 coils: four independent channels for clean, repeatable spark control
- V2 hardware upgrade: compact aluminum case + DT-style connector for reliable underhood wiring
- Built for reliability: uses the robust Ecospark IGBTs for the main drivers
- Perfect fit for common strategies: 4‑cyl sequential COP or 6–8 cyl wasted spark
- Scales with your build: add modules as cylinder count and spark needs grow
What Is a 4‑Channel Ignition Module?
An ignition module (also called an ignition driver or coil driver) sits between your ECU and your coils. Your ECU tells the ignition module when to fire; the module provides the high-current switching required to control inductive coils safely.
QuadSpark is designed to be the simple, reliable way to add four high-current ignition driver channels to a standalone ECU setup—especially when your ECU provides logic-level spark outputs but your coils require an external igniter/driver.
When Do You Need QuadSpark?
Use QuadSpark if you’re running “dumb” coils
Many performance builds use standard inductive coils or coil packs that do not contain built-in igniters. These coils require an external driver. QuadSpark provides that driver stage—so your ECU can control dwell and spark timing while QuadSpark handles the coil current switching.
You may NOT need QuadSpark if you’re running “smart” coils
If your coils have built-in igniters (commonly called smart coils), they typically accept a logic-level ignition signal directly from the ECU. In that case, an external ignition driver module is usually unnecessary.
How Many QuadSparks Do You Need?
QuadSpark is intentionally scalable. Use one module for common 4‑cylinder COP or 6–8 cylinder wasted spark setups, then add more if your cylinder count or ignition strategy expands.
| Engine / Strategy | Needed QuadSpark Count | Typical Notes |
|---|---|---|
| Up to 4 cylinders, sequential coil‑per‑plug | 1 | Four channels = four coils |
| 6–8 cylinders, wasted spark coil packs | 1 | Common DIS / coil-pack approach |
| 6 cylinders, sequential coil‑per‑plug | 2 | Eight channels = 6 coils + 2 unused |
| 8 cylinders, sequential coil‑per‑plug | 2 | Eight channels = eight coils |
| 10–16 cylinders, wasted spark coil packs | 2 | Wasted spark scales efficiently |
| Up to 12 cylinders, sequential coil‑per‑plug | 3 | Twelve channels = twelve coils |
QuadSpark V2 Features (What You’re Actually Buying)
Upgraded Packaging for Real Builds
- Compact aluminum case designed to keep ignition drivers protected
- DT-style connector for clean, serviceable wiring
- Small form factor that mounts easily on race or street cars
Reliable Driver Hardware
- Ecospark IGBTs as the main drivers
- Four independent channels (each channel operates independently for precise ignition control)
Coil Compatibility
QuadSpark V2 is designed to work with a wide range of standard inductive coils and coil packs commonly used in standalone ECU builds. Popular matches include:
It’s also commonly used with OEM distributor‑less ignition setups where the factory ignition module is external (not built into the coil), including many Ford, BMW, and Chrysler COP / wasted spark configurations.
Wiring Overview
QuadSpark follows a straightforward architecture:
- ECU spark output(s) connect to QuadSpark IN1–IN4
- QuadSpark OUT1–OUT4 connect to the coil negative (trigger) side
- QuadSpark GND must be grounded properly (don’t shortcut ignition grounds)
Download the QuadSpark V2 wiring diagram: QS V2 Wiring Diagram (PDF) →
Dwell & Heat Management
Ignition reliability is not just “which coil.” It’s also wiring quality, ground strategy, and dwell settings. Incorrect dwell can overheat coils, reduce spark consistency, and create misfire under load.
- Sequential vs wasted spark matters: wasted spark effectively increases coil workload and typically requires dwell adjustments.
- Follow proven dwell guidance: use the official AMP coil wiring & dwell reference for IGN‑series coils.
Choose Your QuadSpark Package
Pick the package that matches how you’re building your harness:
- QuadSpark Only: best for existing wiring or if you already have DT connectors & terminals
- QuadSpark w/ Pigtail: fastest install for most builders
- QuadSpark w/ Connector & Pins: ideal for clean custom harness builds
Frequently Asked Questions
What does the QuadSpark ignition module do?
QuadSpark is a 4‑channel ignition driver module that allows an ECU’s logic‑level spark outputs to control inductive ignition coils safely by providing the driver stage required for coil switching.
Do I need QuadSpark if I’m running smart coils?
Usually no. Smart coils include built‑in igniters and typically accept a logic‑level spark signal directly. QuadSpark is mainly for standard / dumb coils that require an external igniter/driver.
How many QuadSparks do I need for an 8‑cylinder sequential COP setup?
In most cases you’ll use two QuadSparks for 8‑cylinder sequential COP (8 channels total). Use the “How Many Modules?” table above as your quick reference.
Can I run wasted spark with QuadSpark?
Yes. QuadSpark is commonly used for 6–8 cylinder wasted spark coil-pack strategies. Make sure dwell and duty cycle are configured correctly for wasted spark operation.
What coils work with QuadSpark?
QuadSpark is designed to be compatible with common inductive coils and coil packs such as the IGN‑1, IGN‑4, and IGN‑6, plus many OEM distributor‑less ignition setups that use an external ignition module.
Will QuadSpark work with non‑AMP ECUs?
QuadSpark is intended for ECUs that provide logic‑level ignition outputs. If your ECU outputs a compatible logic spark signal, QuadSpark can be used as the driver stage—allowing you to add robust coil driving without switching ECUs.
Ready to Add 4 Channels of Reliable Coil Driving?
Whether you’re finishing a clean COP conversion, converting to wasted spark coil packs, or expanding ignition capability on an existing standalone setup, the AMP QuadSpark V2 is the compact 4‑channel driver module built for real performance wiring.