A true FBO (Full Bolt On) setup is not complete without a high-performance upgraded intercooler. When combined with a high-flow downpipe, reinforced charge pipes, and a properly optimized ECU calibration, an upgraded intercooler becomes one of the key components for achieving stable power delivery and improved engine reliability.
Designed specifically for high-performance BMW platforms, the BMW M135i intercooler provides increased cooling capacity, improved airflow efficiency, and better resistance to heat soak during demanding driving conditions.
Increased Cooling Capacity
The upgraded intercooler features a high-efficiency core measuring 520x215x145 mm (stepped design, 13,840 cm³), compared to the factory intercooler measuring 510x130x110 mm (7,293 cm³). This represents approximately 68% more frontal cooling area and around 90% greater internal charge air volume.
The increased core size allows the intercooler M135i application to maintain significantly lower intake air temperatures, improving thermal efficiency and helping the engine deliver consistent performance even during repeated acceleration and high-load operation.
Lightweight Competition Core
The Competition intercooler is manufactured using a premium tube and fin core design with integrated internal turbulators to optimize airflow distribution and maximize heat dissipation. Despite its larger dimensions, the complete unit weighs only 8.6 kg, minimizing additional weight while providing substantial cooling improvements.
The lightweight construction makes this solution especially suitable for performance-focused builds where efficiency, fast temperature recovery, and reduced vehicle weight are important factors.
Optimized Airflow Design
Precision-cast aluminum end tanks have been developed using advanced CFD simulations to improve airflow characteristics and reduce unnecessary turbulence. The EVO 2 intercooler kit has been engineered to meet the performance requirements of the BMW M135i and M235i platforms.
Compared with the factory unit, the upgraded design delivers a lower pressure drop while significantly improving cooling performance. Every Wagner intercooler M135i system receives a thermally conductive anti-corrosion coating, ensuring excellent heat transfer, long-term durability, and consistent performance.
Each intercooler is pressure tested and verified for operation up to 6 bar. Manufactured under strict quality control standards, it is suitable for both street performance applications and motorsport environments.
Straightforward Installation
The kit is supplied as a complete direct replacement solution for the original intercooler. Installation is fully plug-and-play, allowing the factory charge air hoses and mounting points to be reused without modifications.
This OEM-style fitment ensures a simple installation process while providing a significant upgrade over the standard cooling system.
Our Expert Recommendation
Wagner's Competition Series uses lightweight tube and fin technology designed for extremely fast heat dissipation. Once operating temperatures increase, the intercooler is capable of recovering quickly and efficiently.
However, because tube and fin cores absorb and release heat rapidly, vehicles running higher boost levels may reach ECU-defined ignition correction limits sooner compared with larger bar and plate designs.
For Stage 1 and moderate Stage 2 builds, the EVO 2 Competition Series is an excellent choice, offering an ideal balance between cooling performance and weight reduction. Drivers prioritizing maximum thermal capacity over weight savings may prefer a bar and plate intercooler solution.
For vehicles regularly exposed to extended high-load conditions, including track use, the Competition design remains a strong option thanks to its rapid heat recovery characteristics.
Package Contents
- 1x Wagner EVO 2 Competition intercooler
- 1x Complete mounting hardware kit
- 1x Installation manual
Performance Benefits
The increased core volume and optimized internal airflow design help maintain lower intake temperatures during aggressive driving. By reducing heat soak and improving charge air cooling efficiency, the upgraded intercooler supports higher boost pressures while maintaining reliable and consistent engine performance.
An upgraded m135i intercooler is an essential modification for enthusiasts looking to maximize the potential of their BMW M135i while maintaining dependable operation under demanding conditions.
