Description
Designed for the Audi RS6 and RS7 C8 equipped with the 4.0 TFSI EA825 twin-turbocharged V8, the Untd. Performance Intercooler is engineered to improve charge-air cooling efficiency, reduce heat soak, and support consistent power delivery under demanding driving conditions.
Featuring a high-performance two-row aluminum intercooler core with 45 rolled tubes, 3 mm tube height, and 4.85 mm multi-louvered fins, this upgrade is designed to maximize heat transfer while maintaining efficient airflow through the cooling system. The rolled tubes incorporate internal fins to promote heat dissipation from compressed intake air, helping manage elevated temperatures generated by the twin turbochargers.
Designed for high-performance street and track applications, this intercooler helps maintain more favorable intake air temperatures during repeated acceleration, spirited driving, and ECU-tuned operation. By improving thermal stability, it supports consistent performance and provides a valuable cooling upgrade for modified EA825-powered vehicles.
Key Features
- High-Performance Two-Row Core:
Features a two-row aluminum intercooler core designed for efficient charge-air cooling. The 45-tube configuration provides an increased tube count compared with the factory 22-tube design, supporting improved heat transfer. - 3 mm Rolled Tubes with Internal Fins:
The rolled-tube design incorporates internal fins that promote heat dissipation from compressed intake air. This configuration helps manage charge-air temperatures under sustained boost and demanding driving conditions. - 4.85 mm Multi-Louvered Cooling Fins:
The multi-louvered fin design promotes heat exchange across the core, helping balance cooling efficiency and airflow resistance for high-output turbocharged applications. - Durable Aluminum Construction:
Engineered for the elevated temperatures, boost pressures, and demanding operating conditions associated with the EA825 twin-turbo V8. The intercooler is designed to provide dependable cooling performance in both street and track environments. - Improved Charge-Air Cooling:
Helps reduce compressed-air temperatures before the air enters the engine. Cooler charge air supports more consistent combustion conditions and can help the ECU maintain ignition timing under demanding operating conditions. - Reduced Heat Soak:
Designed to improve thermal consistency during repeated acceleration, extended high-load driving, and performance use. Better charge-air temperature management can help reduce heat-related power loss. - Supports ECU-Tuned Applications:
Suitable as a supporting cooling upgrade for Stage 1, Stage 2, and other performance setups. Improved charge-air cooling can help maintain more consistent intake temperatures as boost pressure and engine output increase. - OEM-Style Integration:
Designed for integration with compatible factory charge-air connections and cooling-system components. Confirm exact fitment and installation requirements for your vehicle before purchase. - Vehicle-Specific Fitment:
Engineered for compatible Audi C8 RS6 and RS7 4.0 TFSI EA825 configurations, subject to verification of model year and cooling-system configuration.
Core Specifications
| Specification | Details |
|---|---|
| Core Type | Two-row performance intercooler |
| Core Material | Aluminum |
| Tube Configuration | 45 rolled tubes |
| Factory Tube Count (Reference) | 22 tubes |
| Rolled Tube Height | 3 mm |
| Multi-Louvered Fin Height | 4.85 mm |
| Internal Tube Design | Rolled tubes with internal fins |
| Vehicle Platform | Audi C8 RS6 / RS7 |
| Engine | 4.0 TFSI EA825 twin-turbo V8 |
| Installation | Vehicle-specific replacement; verify fitment |
Estimated Performance Benefits
An upgraded intercooler primarily improves charge-air temperature management and performance consistency rather than generating a fixed horsepower increase on its own. Actual results depend on ambient temperature, existing heat soak, ECU calibration, fuel quality, boost pressure, and supporting modifications.
The following figures are reference results reported for the corresponding core design by its original performance-system manufacturer. They are not independently verified dyno results for the Untd. Performance intercooler.
| Tuning Configuration | Reported HP Gain | Reported Torque Gain |
|---|---|---|
| Stage 1 / Stock-Turbo Configuration | ~+20 WHP | ~+18 WTQ |
| Stage 2 / Performance-Tuned Configuration | ~+10 WHP | ~+20 WTQ |
Stock Tune: The primary benefit is improved thermal stability and reduced heat-related performance loss during repeated acceleration. Peak power gains may be limited when the factory ECU is not requesting additional output.
Stage 1 Tune: Improved charge-air cooling can help maintain more consistent intake temperatures and ignition timing under sustained load, supporting repeatable performance.
Stage 2 / Higher-Output Setup: Vehicles running higher boost pressure or more aggressive ECU calibrations can benefit from improved thermal management, helping reduce the likelihood of heat-related power loss.
These figures are reference results from third-party testing and are not guaranteed gains. Actual performance depends on vehicle configuration, environmental conditions, calibration, and testing methodology.
Why Upgrade?
The factory intercoolers on the Audi C8 RS6 and RS7 must manage substantial heat generated by the twin turbochargers. During repeated acceleration or sustained high-load driving, charge-air temperatures can rise, prompting the ECU to reduce ignition timing and potentially limit power output.
The Untd. Performance Intercooler is designed to improve heat dissipation through its two-row core, 45 rolled tubes, internal tube fins, and 4.85 mm multi-louvered cooling fins. This cooling upgrade helps manage thermal buildup and supports more consistent performance under demanding conditions.
The result is improved charge-air temperature management, reduced susceptibility to heat soak, and more repeatable power delivery during spirited street driving and high-performance use.
For enthusiasts pursuing increased power through ECU tuning or supporting modifications, upgraded intercooling provides an important foundation for maintaining thermal stability and consistent performance.
Compatibility
- Audi RS6 Avant C8 – 4.0T EA825
- Audi RS7 Sportback C8 – 4.0T EA825
OEM intercooler reference part numbers:
- Left: 4K0 145 805 P
- Right: 4K0 145 806 B
Important Notice
- Verify exact vehicle fitment, installation requirements, and included hardware before purchase.
- Performance figures are estimates or third-party reference results, not guaranteed gains or independently verified results for this specific product.
- Actual performance varies according to ECU calibration, ambient temperature, fuel quality, boost pressure, vehicle condition, and supporting modifications.
- Professional installation is recommended.
- Any ECU calibration changes should be performed by a qualified tuner familiar with the Audi EA825 platform.
