The COBB Stage 1 + Flex Fuel Power Package for Volkswagen Golf R (MK7/MK7.5) and Audi S3 (8V) delivers a complete performance solution, integrating Accessport tuning, enhanced airflow, and ethanol flexibility. This comprehensive kit includes the COBB Accessport AP3-VLK-003, High Flow Filter, and the Flex Fuel Upgrade Kit providing precise ethanol content monitoring and real-time ECU calibration. Designed for true plug-and-play functionality, it features a high-quality ethanol sensor, custom mounting bracket, ECU pin locator tool, and preassembled fuel lines with OEM-style quick-connect fittings. The package ensures seamless communication with your vehicles ECU for optimal tuning through COBB Off The Shelf (OTS) Maps, optimized for an E30 ethanol blend. Whether you’re daily driving or pushing for track performance, this kit offers consistent power delivery and safe ethanol integration.