This system replaces the primary OEM Catalyst for our Hi-Flow Sport Catalyst. The lower density of the Sport Catalyst allows for exhaust gases to be less restricted and pass through more effectively. The Sport Catalyst comes equipped with a Turbo elbow which allows for an improved connection to the vehicle’s turbo. The wide diameter of the outlet allows the turbo to “spool” sooner increasing performance and improving throttle response. - Requires Stage 2 ECU Remap. All our performance exhaust systems are designed with you in mind, and we Cater to an ever-expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year to deliver the most in demand solutions to all your performance exhaust requirements. All of our products are made in the UK and distributed to more than 90 countries worldwide, making Milltek Sport one of the most accessible performance aftermarket brands on the market. (8V MQB - Pre Facelift Only)