The Banks Monster-Ram Turbo Inlet for the 2017-2026 Duramax L5P is the only intake elbow that outperforms stock without the destructive effects of turbo surge, caused by competitors. More than a year in development, the Monster-Ram increases air density to the compressor. This results in slower turbo shaft speed and a reduction in time to boost. With slower shaft speeds, throttle response is improved, and turbo life is increased.Key Features: Improved throttle response. Reduced turbo shaft speed. Increased turbo life (thanks to reduced shaft speed). 11% lower turbo drive pressure. 23% greater Gulp Capacity™ (volume). 17% larger turbo inlet size. 18.7% less restrictive than stock, 11.9% increase in mass air flow over stock. Retains PCV geometry. Cast aluminum. Banks red powder coat. Or Natural aluminum for custom coating. 50-State Emission Compliant CARB-EO D-161-158