{"product_id":"3-5-inch-stainless-steel-downpipe-1","title":"3.5-Inch Stainless Steel Downpipe","description":"The SPELAB 3.5-inch downpipe exhaust is engineered to optimize the performance of turbocharged L5P 6.6L Duramax diesel engines. This aftermarket component directly replaces the factory downpipe, which is often a significant restriction in the exhaust system. By increasing the diameter to 3.5 inches, it facilitates a higher volume of exhaust gas flow away from the turbocharger's turbine housing. This reduction in backpressure allows the turbo to spool faster, leading to improved throttle response, reduced turbo lag, and the potential for increased power output.\n\nIts design aims to eliminate the factory exhaust choking point, serving as a foundational upgrade for those looking to implement further performance modifications such as tuning or increasing boost levels.\n\nThis downpipe is specifically designed for the 2017-2025 Chevrolet Silverado and GMC Sierra 2500 \u0026amp; 3500HD models equipped with the 6.6L Duramax engine. It is explicitly stated that this downpipe will not fit Cab \u0026amp; Chassis truck variants.","brand":"Spelab","offers":[{"title":"Default Title","offer_id":52871960789304,"sku":"SPES08074-IS08196SR-ES08067","price":228.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/3-5-inch-stainless-steel-downpipe-1","provider":"MOTORMIA","version":"1.0","type":"link"}