{"product_id":"weistec-anti-surge-valve-water-methanol-injection-system-m157-m278-non-suv-abc-01-157-01680-9","title":"Weistec Anti Surge Valve \/ Water-Methanol Injection System, M157 M278, Non-SUV \/ ABC for Mercedes-Benz","description":"\u003cp\u003e The Weistec ASV\/WM Injection System adds multiple beneficial components to the M157 BiTurbo 5.5L engine.  First being the addition of a Weistec Anti Surge Valve (ASV).  From the factory the M157 engine was never given any type of bypass valve.  With out a bypass valve, the turbochargers are subject to compressor surge when the throttle closes after hard acceleration.   Compressor surge can be damaging to turbochargers and generally should be prevented to help ensure the best performance from the turbochargers.  The Weistec ASV is operated by the engine vacuum, opening when the throttle closes allowing the \u003cspan\u003ecompressed air to be vented to the atmosphere instead of back flowing into the compressor housing and stalling the compressor wheel. The vented air produces the \"blow-off\" sound common on many modified turbocharged vehicles.  \u003c\/span\u003eThis specific product is for the non-SUV's that feature either the M157, or the M278 engines.  Check our Vehicle Application Data above to insure fitment.\u003c\/p\u003e\n\u003cdiv class=\"videoWrapper\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/g2Q4uHGmr6g?%0Aenablejsapi=1\u0026amp;version=3\u0026amp;rel=0\u0026amp;controls=1\u0026amp;playerapiid=ytplayer\u0026amp;modestbranding=1\u0026amp;autohide=1;fs=1\u0026amp;\" frameborder=\"0\" allowfullscreen=\"\" width=\"862\" height=\"519\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cdiv class=\"videoWrapper\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/NAdEzLxwBTA?%0Aenablejsapi=1\u0026amp;version=3\u0026amp;rel=0\u0026amp;controls=1\u0026amp;playerapiid=ytplayer\u0026amp;modestbranding=1\u0026amp;autohide=1;fs=1\u0026amp;\" frameborder=\"0\" allowfullscreen=\"\" width=\"862\" height=\"519\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSecond, is the Water\/Methanol Injection (WMI) System.  Water\/Methanol injection has been in use for several decades in multiple applications.  Originally, it was used to reduce knock while increasing power and performance in aircraft engines.  Eventually it came to be used in the motorsports industry where it was found to have substantial benefits on turbocharged engines.  The Weistec ASV\/WMI System features an  Water\/Methanol Controller with built in MAP sensor.  This controller is a progressive controller that slowly increases injection as boost builds, resulting in smooth and seemless operation.  The included Turbo Charge Pipes each have a built in bung, allowing the use of two injectors for uniform injection and cooling.  The combination of the cooling effects of methanol and the knock resistance of water result in significant gains in horsepower* and torque* as well as reduced chance of heat soaking the intercooler system.\u003c\/p\u003e\n\u003cp\u003eThis system is a complete, bolt on system that can be installed with out any guess work or custom fabrication.  Weistec has engineered and manufactured many of the components of this system to ensure a simple and straight forward installation. The gains in performance and consistency make this system an essential upgrade for the M157 engine\u003cspan style=\"font-size: xx-small;\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eReduced Intake Air Temperatures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncreased Knock\/Detonation Resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUp to 100 HP Gain*\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRed Powder Coated Turbo Charge Pipes with built in injector bungs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeistec Anti Surge Valve (Two ASV's on SUV's and ABC equipped vehicles)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeistec Vacuum\/Boost Adapter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater\/Methanol Controller with built in MAP sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDual Weistec CNC Machined Injectior Bodies with built in check valves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmall, Medium and Large Quantity Injection Nozzles Included for a wide range of configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTrunk Mounted 2.25 Gallon Tank with racing cell cap and integrated pump mount\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTrunk tank fits in spare tire well for a hidden installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh Quality Quick Disconnect Fittings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for 50\/50 Water and Methanol Mixture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with Stock, W.3, and W.4 Turbochargers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAll hardware and gaskets are included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2011-2014 Mercedes-Benz CL500 Coupe\u003c\/li\u003e\n\u003cli\u003e2011-2014 Mercedes-Benz CL550 Coupe\u003c\/li\u003e\n\u003cli\u003e2011-2014 Mercedes-Benz CL63 AMG Coupe\u003c\/li\u003e\n\u003cli\u003e2011-2017 Mercedes-Benz S500 Base\u003c\/li\u003e\n\u003cli\u003e2011-2017 Mercedes-Benz S63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2011-2018 Mercedes-Benz CLS500 Coupe\u003c\/li\u003e\n\u003cli\u003e2011-2018 Mercedes-Benz CLS63 AMG Coupe\u003c\/li\u003e\n\u003cli\u003e2011-2018 Mercedes-Benz CLS63 AMG Shooting Brake\u003c\/li\u003e\n\u003cli\u003e2012-2016 Mercedes-Benz E500 Base\u003c\/li\u003e\n\u003cli\u003e2012-2016 Mercedes-Benz E500 Cabrio\u003c\/li\u003e\n\u003cli\u003e2012-2016 Mercedes-Benz E550 Base\u003c\/li\u003e\n\u003cli\u003e2012-2016 Mercedes-Benz E63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2012-2017 Mercedes-Benz E550 Cabriolet\u003c\/li\u003e\n\u003cli\u003e2012-2017 Mercedes-Benz E550 Coupe\u003c\/li\u003e\n\u003cli\u003e2012-2017 Mercedes-Benz S550 Base\u003c\/li\u003e\n\u003cli\u003e2012-2018 Mercedes-Benz CLS500 Shooting Brake\u003c\/li\u003e\n\u003cli\u003e2012-2018 Mercedes-Benz CLS550 Coupe\u003c\/li\u003e\n\u003cli\u003e2012-2019 Mercedes-Benz SL63 AMG Roadster\u003c\/li\u003e\n\u003cli\u003e2012-2020 Mercedes-Benz SL500 Roadster\u003c\/li\u003e\n\u003cli\u003e2012-2020 Mercedes-Benz SL550 Roadster\u003c\/li\u003e\n\u003cli\u003e2013-2016 Mercedes-Benz E500 Coupe\u003c\/li\u003e\n\u003cli\u003e2013-2016 Mercedes-Benz E500 T-Modell\u003c\/li\u003e\n\u003cli\u003e2013-2016 Mercedes-Benz E63 AMG S 4Matic\u003c\/li\u003e\n\u003cli\u003e2014-2017 Mercedes-Benz S550 Coupe\u003c\/li\u003e\n\u003cli\u003e2014-2017 Mercedes-Benz S63 AMG Coupe\u003c\/li\u003e\n\u003cli\u003e2014-2018 Mercedes-Benz CLS63 AMG S 4Matic\u003c\/li\u003e\n\u003cli\u003e2015-2017 Mercedes-Benz S63 AMG Cabriolet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/drive.google.com\/open?id=1cjFsEJstHUGlo8LMu5nfgmQbbFNagc8_\" target=\"_blank\" rel=\"noopener\"\u003eInstallation manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eWeistec part number: 01-157-01680-9 · UPC: 810089560711\u003c\/p\u003e","brand":"Weistec","offers":[{"title":"Default Title","offer_id":60049852367134,"sku":"WEI01-157-01680-9","price":3299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/m157_meth_1.webp?v=1790376911","url":"https:\/\/shop.signatureautohaus.com\/products\/weistec-anti-surge-valve-water-methanol-injection-system-m157-m278-non-suv-abc-01-157-01680-9","provider":"Signature Autohaus","version":"1.0","type":"link"}