Description

The CUSCO Direct Ignition Coil is a high-performance ignition system upgrade engineered to dramatically improve combustion efficiency, throttle response, and power delivery in the GR Yaris. Utilizing an advanced multi-spark discharge technology, this coil generates four sequential sparks within milliseconds at low to mid-range engine speeds (1,000–4,000 RPM), significantly enhancing ignition reliability and flame propagation compared to the stock single-spark system. With a 26.5% increase in spark energy, it ensures more complete combustion, leading to smoother power delivery, improved drivability, and potential gains in performance and efficiency.

Product Highlights

⚡ Advanced Multi-Spark Ignition Technology
Generates four rapid, sequential sparks per ignition event within the critical low-to-mid RPM range (1,000–4,000 RPM). This multi-spark strategy significantly improves the probability of successful combustion, especially under high-load, high-boost, or suboptimal conditions, compared to the OEM single spark.

🔥 Increased Spark Energy & Combustion Efficiency
By utilizing significantly more coil windings, the CUSCO coil delivers up to 26.5% more spark energy than the stock unit. This stronger, more consistent spark ensures faster and more complete combustion of the air-fuel mixture, translating to smoother engine operation, improved throttle response, and more linear power delivery.

🎯 Optimized for Low-Mid Range Performance
Specifically engineered to enhance drivability where it’s most often needed—during daily driving, spirited acceleration, and exiting corners. The improved ignition stability can help reduce turbo lag, smooth out power delivery, and increase low-end torque feel.

🔧 Direct Plug-and-Play Replacement
Designed as a direct, bolt-on replacement for the factory ignition coils. The set includes three coils (for the 3-cylinder engine), ensuring a complete upgrade. No ECU tuning or modification is required for operation.

⚠️ Exclusive Use Restriction
*Cannot be used simultaneously with any ignition capacitor products, including the CUSCO IG Capacitor or similar products from other brands. The coil’s advanced internal design provides its own optimized energy management, making external capacitors redundant and potentially detrimental.

Technical Specifications

• Technology: Multi-Spark Discharge (4 sparks per ignition)

• Effective RPM Range: 1,000 – 4,000 RPM

• Spark Energy Increase: Up to 26.5% vs. OEM

• Contents: Set of 3 coils

• Installation: Direct replacement, plug-and-play

• Compatibility: GR Yaris (3-cylinder engine)

Kit Information

• Product Code: 1C7-748-A

• JAN Code: 4996338119391

Installation & Performance Notes

✅ Simple DIY or Professional Installation
Installation is straightforward: simply replace the three factory coils with the CUSCO units. Ensure the engine is cool and use proper torque on the mounting bolts.

⚙️ Noticeable Drivability Improvements
Drivers can expect smoother idling, more responsive throttle input, and a more linear power curve, particularly in the low-to-mid RPM range. It is an excellent supporting mod for tuned engines or those running higher boost.

🚫 Compatibility Warning – No Capacitors
Do not install this coil set if you are currently using an ignition capacitor system (like the CUSCO IG Cap). The systems are incompatible and must be used separately.