Untd. Performance Carbon Fiber Inlet Pipe is engineered to optimize airflow and enhance performance for Audi B5 S4, RS4 and C5 A6 2.7T models. Constructed from high-quality carbon fiber, this inlet pipe provides a lightweight yet durable solution for boosting air intake efficiency, improving throttle response, and increasing turbocharger performance. It’s the perfect upgrade for those looking to get the most out of their 2.7T engine.