{"product_id":"gfb-mach-2-plumb-back-to-atmosphere-vent-conversion-kit-universal","title":"GFB Mach 2 Plumb Back to Atmosphere Vent Conversion Kit - Universal","description":"\u003ch2\u003eGFB Mach 2 Plumb Back to Atmosphere Vent Conversion Kit - Universal\u003c\/h2\u003e\n\n\u003cp\u003eGFB built the \u003cstrong\u003eMach 2\u003c\/strong\u003e blow off valve as a recirculating unit from the factory, but plenty of owners want that classic atmosphere venting sound without swapping the whole valve. This conversion kit gives you exactly that, letting you switch your \u003cstrong\u003eMach 2\u003c\/strong\u003e from recirc to atmosphere venting with genuine GFB hardware rather than a generic workaround.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers the atmosphere conversion kit (SKU 5930) suited to \u003cstrong\u003eGFB Mach 2\u003c\/strong\u003e valves with part numbers \u003cstrong\u003eT9100\u003c\/strong\u003e, \u003cstrong\u003eT9101\u003c\/strong\u003e, \u003cstrong\u003eT9102\u003c\/strong\u003e, \u003cstrong\u003eT9104\u003c\/strong\u003e, \u003cstrong\u003eT9105\u003c\/strong\u003e and \u003cstrong\u003eT9135\u003c\/strong\u003e. One kit suits all of these part numbers, so there's no variant selection required beyond confirming your Mach 2 is one of the listed types.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The Mach 2 ships with a softer spring (part 6116) suited to idle vacuum of 18 inHg or less. If the piston hovers open at idle even with spring preload maxed out, fit the firmer spring (part 6115) included in this kit to prevent stalling or backfiring. If the piston already stays closed at idle, there's no need to swap the spring.\u003c\/p\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAtmosphere venting trumpet (replaces the hose outlet, adds volume)\u003c\/li\u003e\n\u003cli\u003eFirmer spring, part number 6115\u003c\/li\u003e\n\u003cli\u003e30mm hose plug for blocking off the recirc hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm which Mach 2 part number is fitted to your vehicle before ordering.\u003c\/p\u003e\n\n\u003cp\u003eNot sure if this kit suits your build? Contact our team at \u003ca href=\"mailto:sales@chicaneaustralia.com.au\"\u003esales@chicaneaustralia.com.au\u003c\/a\u003e for expert advice.\u003c\/p\u003e","brand":"GFB","offers":[{"title":"Default Title","offer_id":52839132660005,"sku":"5930","price":40.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/03-28.jpg?v=1784861741","url":"https:\/\/www.chicaneaustralia.com.au\/products\/gfb-mach-2-plumb-back-to-atmosphere-vent-conversion-kit-universal","provider":"Chicane Australia","version":"1.0","type":"link"}