Units will ship June 1st 2025 Introducing the A2D / Modalworks M157 / M278 Ultimate Air Intake System, a joint development product designed to deliver a groundbreaking performance upgrade.  Designed and manufactured in the USA, this system is the only one of its kind that completely reroutes the entire airflow path, ensuring maximum efficiency and power. This design reverses the inlet and turbo tubes, which provides many benefits including reduced number of bends, increased size, and the ability to relocate PCV and MAP sensors for increased efficiency.  Installed on the world's fastest stock turbo M157, it demonstrates real-world performance gains. With this innovative design, expect to see 60-130mph DRAGY times reduced by 0.5 to 2 seconds, based on supporting mods, tune and environmental conditions.    Compatibility: E63(S) AMG (W212/S212) – M157 5.5L V8 BiTurbo – (2011 – 2016) CLS63(S) AMG (C218/W218/X218) – M157 5.5L V8 BiTurbo – (2011 – 2017) E500 (W212/S212) – M278 4.7L V8 BiTurbo – (2013 – 2016) CLS 500 (C218/W218/X218) – M278 4.7L V8 BiTurbo – (2012 – 2018) E550 (W212/S212) – M278 4.7L V8 BiTurbo – (2011 – 2016) CLS 550 (C218/W218/X218) – M278 4.7L V8 BiTurbo – (2011 – 2016) Technical Specifications: Filter Enclosure Housing: Constructed from a composite of nylon and carbon fiber for strength, reduced weight, and enhanced aesthetics. Each box includes gaskets that ensure an air-tight seal against the hood, preventing hot air recirculation. Air Filter: designed for maximum air flow with an 4.5” inlet. Washable and reusable for longevity. Air Tubes: CFD (Computational Fluid Dynamics) designed with a tapering profile from a 4.5" inlet down to the turbocharger for optimal airflow efficiency and reduced turbulence. Constructed from robust 6-ply reinforced silicone for added strength and temperature resistance. Air Connections: Precision CNC machined air connections for reliability and performance. Silicone Hoses: Comes with robust  silicone air hoses specifically for the PCV (Positive Crankcase Ventilation) system, ensuring durability and a leak-proof seal. Air Pressure Sensor: Each kit comes with two extension harnesses to mount your sensors in the optimal location for accurate readings that prevent check engine lights. Oil Lines: Includes new high strength lines and billet CNC fittings and clamps for a secure, high-performance connection. Installation:  Direct bolt-on system, no permanent modifications required. Includes all necessary hardware and instructions for a precise fit. Requires removal of the OEM transmission cooler oil lines Estimated installation time: 3-4 hours with basic tools. Included in Each Kit: 2x air inlet tubes 2x filter enclosure boxes with gaskets 2x high flow air filters 2x filter to intake tube velocity stacks 4x intake tubes 2x billet air intake tube joiners 2x PCV silicone molded hose extensions 2x PCV relocation fittings  2x PCV harness extenders  2x high temp oil lines 4x billet oil line adapter fittings Video Instructions