{"product_id":"weistec-anti-surge-valve-system-m157-m278-suv-01-157-01765-3","title":"Weistec Anti Surge Valve System, M157 M278, SUV for Mercedes-Benz","description":"\u003cp\u003e The Weistec ASV System adds a Weistec Anti Surge Valve (ASV) to the BiTurbo AMG M157 and M278 engines.  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\u003e\u003c\/p\u003e\n\u003cdiv class=\"o-layout o-layout--justify-center\"\u003e\n\u003cdiv class=\"o-layout__item u-width-12 u-width-8--xl\"\u003e\n\u003ciframe loading=\"lazy\" class=\"frame\" src=\"https:\/\/www.youtube.com\/embed\/NAdEzLxwBTA?rel=0\" title=\"YouTube video player - Weistec Engineering Anti-Surge Valve System M157 M278 M133 M275 M279\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e \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. \u003cspan style=\"font-size: xx-small;\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features:\u003c\/h2\u003e\n\u003cul\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\u003eHigh Quality Quick Disconnect Fittings\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\u003e2012-2015 Mercedes-Benz GL63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2012-2015 Mercedes-Benz ML500 Base\u003c\/li\u003e\n\u003cli\u003e2012-2015 Mercedes-Benz ML550 Base\u003c\/li\u003e\n\u003cli\u003e2012-2015 Mercedes-Benz ML63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2012-2017 Mercedes-Benz G63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2013-2014 Mercedes-Benz GL450 Base\u003c\/li\u003e\n\u003cli\u003e2013-2015 Mercedes-Benz G63 AMG 6x6\u003c\/li\u003e\n\u003cli\u003e2013-2015 Mercedes-Benz GL550 Base\u003c\/li\u003e\n\u003cli\u003e2015-2019 Mercedes-Benz GLE63 AMG S Base\u003c\/li\u003e\n\u003cli\u003e2015-2019 Mercedes-Benz GLE63 AMG S Coupe\u003c\/li\u003e\n\u003cli\u003e2015-2019 Mercedes-Benz GLE63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2015-2019 Mercedes-Benz GLE63 AMG Coupe\u003c\/li\u003e\n\u003cli\u003e2015-2019 Mercedes-Benz GLS63 AMG Base\u003c\/li\u003e\n\u003cli\u003e2016-2018 Mercedes-Benz GLE550 Coupe\u003c\/li\u003e\n\u003cli\u003e2016-2020 Mercedes-Benz GLE500 Base\u003c\/li\u003e\n\u003cli\u003e2016-2020 Mercedes-Benz GLE550 Base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/drive.google.com\/file\/d\/1tECzSK3xmer8kJ9kd2TwNM2VBouXQhba\/view\" target=\"_blank\" rel=\"noopener\"\u003eInstallation manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eWeistec part number: 01-157-01765-3\u003c\/p\u003e","brand":"Weistec","offers":[{"title":"Default Title","offer_id":60049853022494,"sku":"WEI01-157-01765-3","price":2499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/m157_vta_1.jpg?v=1790376937","url":"https:\/\/shop.signatureautohaus.com\/products\/weistec-anti-surge-valve-system-m157-m278-suv-01-157-01765-3","provider":"Signature Autohaus","version":"1.0","type":"link"}