High Volume Downpipe w/ 4.50-Inch GESi G-Sport Catalytic

The PRL Motorsports High Volume Downpipe Upgrade is engineered to optimize airflow and increase the efficiency of Honda's 1.5L turbo engine. Research and testing indicate that a downpipe upgrade is one of the most effective modifications for boosting performance in these vehicles. This downpipe promotes optimal exhaust flow with virtually no turbulence throughout its construction. Constructed with 304 stainless steel investment cast ends, this downpipe features CNC pocketing for a smooth transition to a 4.50″ OD, 400 CPSI GESi G-Sport catalytic converter. This specific catalytic converter is formulated for small displacement direct injection vehicles to ensure optimal exhaust flow. All components are fully back-purged on-site to withstand high exhaust gas temperatures. The wide cast inlet smoothly blends turbine outlet and wastegate gases to reduce restriction, while the cast outlet allows for a smooth taper to aftermarket or factory front pipes. For maximum exhaust flow and performance, it is recommended to pair this downpipe with the PRL Motorsports 3″ Front Pipe Upgrade. All necessary gaskets, stainless hardware, and installation components are included for a seamless installation. This downpipe is designed to fit all 2022+ Honda Civic 1.5T models, including Si, CVT, 6MT, RHD, and international variants. It is also compatible with the 2023+ Acura Integra 1.5T and 2023+ Honda Accord 1.5T.