OEM catalysts are often very dense and restrictive to gas flow. The Milltek Hi-Flow Sports Catalyst reduces restriction compared to OE catalysts, allowing for a freer-flowing exhaust system to improve engine performance. - Reduces restriction over OE catalysts - Allows for improved exhaust gas flow - Designed for enhanced engine performance Specifications: - Pipe Diameter: 57.15 - Estimated Fitting Time: 1 to 1 hours (including removing OE system) - Race Product: Yes - EMarked: No - Part Number: MSVW454 Vehicle Compatibility: - Volkswagen Corrado G60 1.8 1988-1991 - Volkswagen Corrado VR6 1988-1991 - Volkswagen Corrado VR6 1992-1995