3.125" T304 Stainless Steel Downpipe

The 27WON Performance Downpipe is engineered to optimize exhaust flow for turbocharged engines in the 2016+ Honda Civic 1.5T (including SI, Sedan, Coupe, and Hatchback models) and 2017+ Honda CRV 1.5T. This downpipe features a CAD-designed 3.125” inlet, creating a larger volume for hot exhaust gases to escape, thereby enhancing turbocharger efficiency and response. The inlet and outlet flanges are constructed from investment cast T304 stainless steel, while the stainless steel piping and brackets are precision TIG welded for maximum durability and a long-lasting performance upgrade. It comes equipped with a high-flow 200-cell density metallic foil catalytic converter for street and race applications. Note that this product is for off-road use only, and a Check Engine Light (CEL) may be illuminated without proper tuning or O2 sensor modification. The installation is estimated to take 2 hours and is rated at a 4/5 difficulty level. Performance gains of up to 7 wHP are reported between 3200rpm and 5400rpm with no tuning changes, with more significant gains achievable when custom tuning is applied. The product includes a Limited Lifetime Warranty and is designed in Vancouver, Washington. Modifications to the lower heat shield may be required for models outside of the U.S. and Canada.