🛠️ Installation Guidelines for G-Sport Catalytic Converters
Proper installation is essential to ensure that G-Sport by GESI® catalytic converters deliver reliable performance and emissions compliance. While each converter is engineered for high-performance use, real-world results depend on correct system design, placement, and application matching.
This guide outlines best practices, common mistakes to avoid, and a final installation checklist to help integrators and fabricators build effective, durable exhaust systems using G-Sport catalytic converters.
General Best Practices
✔ Install in or Near OEM Location
For best emissions performance and to reduce the risk of triggering a CEL, converters should be placed in the factory location or as close to it as possible. This ensures proper catalyst light-off and accurate O2 sensor function.
✔ Ensure Leak-Free Installation
All joints before and after the converter should be fully sealed using high-quality welds or clamps. Even small leaks near the converter can impact O2 sensor readings and trigger emissions-related fault codes.
✔ Sensor Positioning
Downstream O2 sensors should be placed appropriately after the converter to monitor catalyst efficiency accurately. Avoid moving sensors too far downstream from their original placement.
✔ Select the Proper Converter Size for Power
Match the converter to the vehicle’s expected power output—not just factory horsepower. Because many vehicles are modified after installation, selecting a converter rated above current power levels helps prevent early failure and ensures long-term durability.
✔ Use Heat Shielding Where Needed
If converters are installed close to sensitive components such as wiring or plastic underbody panels, add heat shielding to prevent thermal damage.
✔ Directional Note — Mid-Bed Only
All G-Sport catalytic converters are non-directional except for Mid-Bed models. Mid-Bed units must be installed in the correct flow direction (as marked on the body) to ensure proper emissions function and O2 sensor accuracy.
Common Mistakes to Avoid
✘ Installing the Converter Too Far Downstream
The farther a converter is from the engine, the cooler the exhaust temperature becomes. If it cannot reach light-off temperature, efficiency drops and CELs may be triggered—especially on 2017+ vehicles with sensitive emissions systems.
✘ Using an Undersized Converter
A converter not rated for the vehicle’s power level—or one that doesn’t account for future modifications—raises the likelihood of substrate damage and early failure.
✘ Installing Mid-Bed Units Backwards
Mid-Bed converters feature a dual-brick design with an O2 sensor between them. These must be installed in the correct direction as labeled on the body. Reversing flow will cause emissions failure.
Installation Checklist
- ✔ Converter is installed in or near OEM location
- ✔ All clamps or welds are leak-free
- ✔ O2 sensors are positioned correctly and reading accurately
- ✔ Converter selection matches or exceeds expected power output
- ✔ No contact with sensitive components—heat shielding added if required
- ✔ Mid-Bed converters are installed in the correct flow direction (if applicable)
Final Notes
Adhering to these guidelines will help ensure consistent results across platforms, reduce warranty claims, and protect both the catalytic converter and overall system performance. By following these best practices, fabricators and installers can deliver reliable, emissions-compliant, and long-lasting solutions using G-Sport by GESI® catalytic converters.