Description
Upgrade the charge-air cooling system of your Audi B9/B9.5 A4 or A5 2.0T EA888 with the Untd. Performance Evo1 Intercooler Kit, engineered to provide improved cooling efficiency, lower intake air temperatures, and increased resistance to heat soak.
The factory intercooler can become increasingly limited as boost and engine output increase, particularly on tuned vehicles and during repeated wide-open-throttle pulls. A larger, more efficient intercooler helps keep charge-air temperatures under control, allowing the turbocharged 2.0T to maintain more consistent performance as temperatures rise.
Key Features
- Evo1 High-Performance Intercooler: Increased cooling capacity helps remove heat from compressed intake air before it reaches the engine.
- Lower Intake Air Temperatures: Cooler charge air is denser and can help maintain more consistent engine performance.
- Improved Heat-Soak Resistance: Designed to maintain cooling performance during repeated pulls, spirited driving, and extended high-load operation.
- Increased Airflow Capacity: Improved internal airflow helps support higher boost and increased engine output.
- Ideal for Tuned EA888 Engines: Well suited for Stage 1, Stage 2, and higher-output 2.0T builds.
- Improved Power Consistency: Helps reduce the performance loss associated with rising intake temperatures and ignition timing correction.
- Direct-Fit Design: Designed as an OEM-style replacement for the B9/B9.5 A4/A5 2.0T platform.
- Stock or Modified: Works as a supporting upgrade for both stock vehicles and extensively modified builds.
- No ECU Tune Required: The intercooler can be installed without changing the factory ECU calibration.
Why Upgrade?
The factory intercooler is designed around the original power output and thermal requirements of the EA888. Once the engine is tuned for additional boost, the turbocharger compresses more air and generates additional heat.
As intake temperatures increase, the ECU may reduce ignition timing to protect the engine, which can result in inconsistent power during repeated pulls. Increasing intercooler capacity helps combat this heat buildup and maintain more stable charge-air temperatures.
The Evo1 intercooler is therefore particularly valuable for Stage 1, Stage 2, hybrid-turbo, and other higher-output EA888 builds where maintaining consistent intake temperatures becomes increasingly important. Independent testing of upgraded B9 A4/A5 intercoolers has demonstrated substantially lower IATs and improved resistance to heat soak compared with the OEM intercooler. (Unitronic)
Estimated Performance Gain
An intercooler is primarily a cooling and power-consistency upgrade, rather than a standalone horsepower modification.
On a stock vehicle, peak horsepower gains may be relatively small. The benefits become more noticeable on tuned vehicles, where improved charge-air cooling can help the engine maintain the power produced by the ECU calibration over repeated pulls.
| Configuration | Estimated HP Gain / Retained Power | Estimated Torque Gain / Retained Torque | Estimated Output |
|---|---|---|---|
| Stock Tune | +0–5 HP | +0–5 lb-ft | Near factory output |
| Stage 1 | +5–15 HP retained | +5–15 lb-ft retained | Tune dependent |
| Stage 2 | +10–20 HP retained | +10–20 lb-ft retained | Tune dependent |
| Hybrid / Big Turbo | +15–30+ HP retained | +15–30+ lb-ft retained | Build dependent |
Important: These figures represent estimated power retention and consistency from improved charge-air cooling, not horsepower generated solely by the intercooler. Actual results depend on the ECU tune, boost pressure, turbocharger, fuel quality, ambient temperature, and supporting modifications.
Ideal For
- Stock B9/B9.5 2.0T vehicles
- Stage 1 EA888 builds
- Stage 2 EA888 builds
- Hybrid-turbo applications
- Big-turbo builds
- Repeated highway pulls
- Spirited street driving
- Track use
- Hot-weather driving
- Vehicles experiencing heat soak
Compatibility
Audi A4
- A4 B9 2.0T — 2017–2019
- A4 B9.5 2.0T — 2020+
Audi A5
- A5 B9 2.0T — 2017–2019
- A5 B9.5 2.0T — 2020+
Audi A4 Allroad
- A4 Allroad B9/B9.5 2.0T — 2017+
Comparable B9/B9.5 intercooler applications confirm A4 and A5 2.0T fitment across the B9 platform, with Allroad also sharing the 2.0T MLB intercooler application. (WCT Performance)
Fitment Note: Certain later B9.5 vehicles may be equipped with active grille shutters behind the front bumper. Intercooler designs can differ depending on this equipment, so verify your vehicle configuration before ordering. (Unitronic)
Tuning & Installation
No ECU tune is required to install the Evo1 intercooler.
However, the benefits become increasingly important as boost and power increase. The intercooler is an excellent supporting modification for vehicles running upgraded intakes, charge pipes, downpipes, turbochargers, and ECU tuning.
Professional installation is recommended. After installation, inspect all charge-air connections and clamps to ensure the system is properly sealed before operating the vehicle under increased boost.
⚠️ Important Notice
The estimated horsepower and torque figures are general estimates and represent potentially retained performance, not direct horsepower created by the intercooler.
The primary benefits of the Untd. Performance Evo1 Intercooler Kit are lower intake air temperatures, improved heat-soak resistance, increased charge-air cooling capacity, and more consistent power delivery.
Always verify your exact model year, engine configuration, and intercooler fitment before ordering.
This also gives you room to offer charge pipes and/or post-charge pipes as separate complementary upgrades, similar to the B9 S4/S5 Evo1 listing.
