CSF High-Performance Intercooler Upgrade

The Unitronic CSF High-Performance Intercooler Upgrade is engineered to address the thermal limitations of factory intercoolers in tuned Audi C8 RS6 and RS7 models equipped with the 4.0 TFSI EA825 engine. This intercooler system, developed in collaboration with CSF Race and PWR, is designed to support performance software tunes ranging from Stage 1 to full Stage 3 hybrid turbo setups. It effectively combats heat soak and power loss experienced with stock components under increased thermal load. At its core is a Formula-1 grade PWR intercooler core, featuring a 2-row design with rolled tubes and internal fins optimized for superior airflow and heat dissipation. The construction includes precision CNC-machined billet aluminum end tanks, finished with TIG-welded seams for durability. A black thermal-dispersion coating is applied to further aid in heat management and provide a stealthy aesthetic. Installation is designed as a direct OEM-fit upgrade, with a true bolt-on design ensuring ease of fitment on 2021–2023 Audi RS6 Avant and RS7 Sportback 4.0 TFSI models. Key benefits include dramatically lowered intake air temperatures (IATs) for consistent horsepower, superior heat-soak resistance for sustained peak performance in various driving conditions, and precision craftsmanship for lasting reliability. This intercooler is specifically designed for the 2021–2023 Audi RS6 Avant and RS7 Sportback 4.0 TFSI models. The product page explicitly states it "Does NOT Fit" other configurations, emphasizing the need for verification against the specified fitment. It is presented as a true direct-fit bolt-on upgrade.