Power comes in earlier and turbo spool-up is significantly improved. The long gradual transitions within the mandrel bent pipe section allows exhaust gasses to maintain velocity without a buildup of back pressure inside of the system. The CAT is new and specific. It has a newly formulated substrate with a specific wash for new vehicle emissions requirements. It is not an off the shelf cat.Exclusive BenefitsSignificantly Lower Back Pressure Means the Potential for More PowerExhaust Gas Can More Easily Flow Across the Turbine Wheel49 State Legal High Flow GESI Catalytic Converter Rated to Over 800 HorsepowerNewly Formulated Substrate for New Vehicle Emissions RequirementsThroaty Exhaust Note Under Wide Open ThrottleCAD Engineered for Maximum Exhaust Flow with Unrivaled Fit and Finish304 Stainless Steel 4.5” Design Reduces to a 3.5” Flex Section, Maximizing Volume and FlowTurbine Flange Offers a Smooth Transition from the Turbine Outlet3.15” (80mm) Outlet Allows You to Run Either Stock or Aftermarket Catback SystemsComplete Bolt on Means No Cutting – Bolts to the Factory LocationO2 Sensors in OEM Locations. No Jumpers NeededMandrel Bent Tubing for the Best Flow The AMS MKV A90 2020+ Toyota Supra Street Downpipe w/ EPA-verified Ultra High Flow GESI Catalytic ConverterThe 4.5″ full mandrel bent downpipe is the best performing and most durable on the market. Power comes in earlier and turbo spool-up is significantly improved. The long gradual transitions within the mandrel bent pipe allows exhaust gasses to maintain velocity without a buildup of back pressure inside of the system. We were able to design a superior product because of our superior engineering. The CAT is new and specific. It has a newly formulated substrate with a specific wash for new vehicle emissions requirements. It is not an off the shelf cat. First in Class Durability and Performance AMS is first and foremost an engineering company. The AMS Engineering team utilized Solidworks (3D software) to blueprint the inlet and outlets to optimize exhaust flow. The AMS MKV Supra Downpipe features heavy gauge stainless steel to retain as much heat in the down pipe as possible. Our Engineers 3D printed the downpipe to ensure an OEM level of fitment. Our threaded O2 sensor bungs allow the use of factory O2 sensor. Our downpipes perform better and are not prone to cracking like the alternatives offered by some of the competition. AMS’ Engineering Team produced a product that doesn’t just perform better, they made it sound better too.Kit IncludesFully Stainless Steel Supra Street Downpipe w/ EPA-verified Ultra High Flow GESI Catalytic ConverterAdjustable Mounting Bracket