{"product_id":"gfb-mach-2-plumb-back-to-atmosphere-vent-conversion-kit-suits-t9120","title":"GFB Mach 2 Plumb Back to Atmosphere Vent Conversion Kit - Suits T9120","description":"\u003ch2\u003eGFB Mach 2 Plumb Back to Atmosphere Vent Conversion Kit - Suits T9120\u003c\/h2\u003e\n\n\u003cp\u003eGFB is well known for building blow off valves that are as reliable as they are loud, and this conversion kit lets you get the most aggressive sound out of your \u003cstrong\u003eMach 2\u003c\/strong\u003e valve. If you're after that classic atmosphere hiss instead of the quieter recirculating hum, this kit gives you everything needed to make the switch properly.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers the atmosphere conversion kit for the \u003cstrong\u003eGFB Mach 2 (T9120)\u003c\/strong\u003e blow off valve. It includes the trumpet, firmer spring, and hose plug required to convert the valve from recirculating to atmosphere venting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e the firmer spring is only required if the piston hovers open at idle with the standard spring's preload maxed out. If the piston stays fully closed at idle with the existing spring, there's no need to fit the firmer one included in this kit.\u003c\/p\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrumpet (replaces the hose outlet for a louder, more open sound)\u003c\/li\u003e\n\u003cli\u003eFirmer spring, part number 6115\u003c\/li\u003e\n\u003cli\u003e20mm hose plug to block off the recirculation outlet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandard Mach 2 spring (part number 6116) suits recirculating venting or idle vacuum of 18 in Hg or less\u003c\/li\u003e\n\u003cli\u003eFirmer spring should only be fitted if the piston hovers open at idle to prevent stalling or backfiring\u003c\/li\u003e\n\u003cli\u003eTrumpet is optional for function but increases the venting sound\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 ensure your Mach 2 valve configuration is confirmed 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":52888101257509,"sku":"5920","price":36.18,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/5920.jpg?v=1785191669","url":"https:\/\/www.chicaneaustralia.com.au\/products\/gfb-mach-2-plumb-back-to-atmosphere-vent-conversion-kit-suits-t9120","provider":"Chicane Australia","version":"1.0","type":"link"}