Invidia HS08SW1DOCB Catted Downpipe with Divorced Wastegate and High Flow Cat

The Invidia HS08SW1DOCB is a high-performance catted downpipe engineered to replace the restrictive factory downpipe on turbocharged Subaru vehicles. This downpipe features a divorced wastegate flange design that separates exhaust gas flow from the turbo and wastegate, creating smoother exhaust flow for improved horsepower and torque gains while maintaining emissions compliance with its integrated high-flow catalytic converter.

Key Features:

• 304 stainless steel construction with polished piping for durability and corrosion resistance
• 76mm (3-inch) piping diameter for maximum exhaust flow and reduced backpressure
• Large 4-inch stainless steel bellmouth inlet to enhance gas flow from the turbo
• Divorced wastegate flange separates exhaust flow for reduced turbulence
• Lower-mounted high-flow catalytic converter maintains emissions compliance
• Three O2 sensor bungs: two for factory oxygen sensors plus extra bung for aftermarket wideband sensor
• One-piece design for simplified installation
• Direct bolt-on fitment compatible with factory exhaust or aftermarket cat-back systems

This downpipe delivers measurable power gains over the stock exhaust system while keeping exhaust emissions clean and environmentally safe. Professional installation and ECU tuning are required to optimize performance and maintain proper engine operation. Not CARB compliant - for off-road and racing use only.