The M177 Polymer Carbon Fiber High Flow Intake is a game changer for intake technology on the GLC63 platforms. Our tube design utilizes a fully flow optimized channel with optimal filter placement for direct cold air injection into the filter. Our oval design opening is equivalent to a 4.5" circular diameter, which is the largest on the market.  Constructed from a polyamide and carbon fiber blend to yield amazing thermal performance and prevent heat soak.  This patent-pending product achieves has exhibited 63whp (75+ crank HP gain) above the stock intake with stage 2 (stock turbo, stock fuel system) calibrations.  With upgraded turbos and upgraded fueling, this design fed the fastest 60-130mph record at 5.1s for a W205 C63. (These results will vary based on tuner and supporting mods)   We also offer options for pre-turbocharger methanol injection to spray directly into the turbocharger which reduces IAT, increases octane and makes your turbo perform more efficiently.  INSTALLATION INSTRUCTIONS