{"product_id":"hiff44sustack2inch","title":"2\" SU Carb Hiff44 Ram Pipe Velocity Stack","description":"\u003ch2\u003e2\" Vortex Velocity Stack for SU HIF44 Carburettors\u003c\/h2\u003e\u003cp\u003eUnlock improved airflow from your \u003cstrong\u003eSU HIF44 carburettor\u003c\/strong\u003e with the IPNG Automotive 2\" Vortex Velocity Stack.\u003c\/p\u003e\u003cp\u003eDesigned with performance in mind and developed in accordance with the principles outlined in David Vizard's highly regarded \u003cstrong\u003eA-Series engine tuning\u003c\/strong\u003e work, this velocity stack has been tested to provide an \u003cstrong\u003eapproximately 5.2% improvement in airflow\u003c\/strong\u003e over the standard A-Series setup.\u003c\/p\u003e\u003cp\u003eThe Vortex design combines a smooth bellmouth entry with integrated curved guide vanes, helping control the incoming airflow and reduce turbulence as it enters the carburettor.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned specifically for \u003cstrong\u003eSU HIF44 carburettors\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e2\" tall velocity stack design\u003c\/li\u003e\n\u003cli\u003eTested to provide approximately \u003cstrong\u003e5.2% increased airflow\u003c\/strong\u003e over the standard A-Series setup\u003c\/li\u003e\n\u003cli\u003eDesigned in accordance with principles from David Vizard's A-Series engine tuning work\u003c\/li\u003e\n\u003cli\u003eSmooth bellmouth entry helps reduce turbulence\u003c\/li\u003e\n\u003cli\u003eIntegrated curved guide vanes help direct airflow into a controlled circular motion\u003c\/li\u003e\n\u003cli\u003eDesigned to improve airflow into the carburettor\u003c\/li\u003e\n\u003cli\u003eManufactured using high-temperature-resistant plastic\u003c\/li\u003e\n\u003cli\u003e3D printed by IPNG Automotive\u003c\/li\u003e\n\u003cli\u003eOther sizes and lengths available\u003c\/li\u003e\n\u003cli\u003eRetains the original carburettor fixing arrangement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplication\u003c\/h3\u003e\u003cp\u003eThe HIF44 is a popular \u003cstrong\u003e1¾\" SU carburettor\u003c\/strong\u003e found across a wide range of classic British vehicles. This velocity stack is suitable for HIF44 applications including vehicles such as:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMini\u003c\/li\u003e\n\u003cli\u003eJaguar\u003c\/li\u003e\n\u003cli\u003eTriumph\u003c\/li\u003e\n\u003cli\u003eMG\u003c\/li\u003e\n\u003cli\u003eOther classic British vehicles fitted with an SU HIF44 carburettor\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlease confirm that your carburettor is an SU HIF44 before purchasing.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eProduct Information\u003c\/h3\u003e\u003cp\u003eThe standard carburettor inlet can create turbulence and airflow restriction as air enters the carburettor. A properly designed velocity stack provides a smoother transition into the carburettor, helping air enter more efficiently.\u003c\/p\u003e\u003cp\u003eThe IPNG \u003cstrong\u003eVortex\u003c\/strong\u003e design takes this concept further by incorporating curved guide vanes within the inlet. These vanes help guide incoming air into a controlled circular motion, designed to improve the quality and efficiency of the airflow entering the carburettor.\u003c\/p\u003e\u003cp\u003eThe result is a velocity stack designed not simply to increase the available intake area, but to \u003cstrong\u003eactively manage the airflow entering the HIF44\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eIndependent testing of this design has demonstrated an \u003cstrong\u003eapproximately 5.2% improvement in airflow over the standard A-Series setup\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThe design has been developed with reference to the established A-Series tuning principles associated with \u003cstrong\u003eDavid Vizard\u003c\/strong\u003e, making it particularly suited to enthusiasts looking to optimise the breathing characteristics of their classic A-Series engine.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e ★☆☆☆☆\u003cbr\u003e\u003cstrong\u003eEstimated Time:\u003c\/strong\u003e 15–30 minutes\u003c\/p\u003e\u003cp\u003eThe velocity stack is designed to retain the \u003cstrong\u003eoriginal HIF44 carburettor fixing arrangement\u003c\/strong\u003e, making installation straightforward.\u003c\/p\u003e\u003cp\u003eRemove the existing intake\/filter arrangement, fit the velocity stack to the HIF44 using the original fixing arrangement and ensure everything is securely fastened before use.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × 2\" Vortex Velocity Stack for SU HIF44 carburettor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eImportant Information\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eCarburettor, manifold, air filter and other accessories are not included.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis listing is for \u003cstrong\u003eone 2\" Vortex velocity stack only\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThis product is designed specifically for the \u003cstrong\u003eSU HIF44 carburettor\u003c\/strong\u003e. Please confirm your carburettor type before purchasing.\u003c\/p\u003e\u003cp\u003eOther Vortex velocity stack sizes and lengths are also available from IPNG Automotive.\u003c\/p\u003e\u003cp\u003eUsing an SU HS4, HIF38, HIF4 or H4 with a 35mm intake instead? Compare our \u003ca href=\"\/products\/1halfinchsustack\"\u003e\u003cstrong\u003e1.5\" Vortex stack (IP-0045)\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"\/products\/2inchsustack\"\u003e\u003cstrong\u003e2\" Vortex stack (IP-0044)\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"\/products\/2halfinchsustack\"\u003e\u003cstrong\u003e2.5\" Vortex stack (IP-0046)\u003c\/strong\u003e\u003c\/a\u003e for the 35mm SU fitment.\u003c\/p\u003e\u003ch3\u003eIPNG Part Number\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIPNG SKU:\u003c\/strong\u003e IP-0010\u003c\/p\u003e\u003ch3\u003eWhy Choose IPNG Automotive?\u003c\/h3\u003e\u003cp\u003eAt IPNG Automotive, we specialise in developing \u003cstrong\u003eperformance-focused and OEM+ components for enthusiast vehicles\u003c\/strong\u003e, combining modern manufacturing techniques with proven principles from traditional engine tuning.\u003c\/p\u003e\u003cp\u003eOur aim is to develop practical performance products that provide measurable improvements while remaining suitable for the classic vehicles they were designed for.\u003c\/p\u003e\u003ch3\u003eVortex Fitment \u0026amp; Selection Guide\u003c\/h3\u003e\u003cp\u003eNot sure which Vortex stack is right for your carburettor? Use our \u003ca href=\"\/blogs\/installation-guides\/vortex-velocity-stack-fitment-selection-guide\"\u003e\u003cstrong\u003eVortex velocity stack fitment \u0026amp; selection guide\u003c\/strong\u003e\u003c\/a\u003e to compare carburettor fitment, intake or bore size, stack height and IPNG part number.\u003c\/p\u003e","brand":"IPNG Automotive","offers":[{"title":"Default Title","offer_id":58393787760975,"sku":"IP-0010","price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1031\/7729\/0063\/files\/imgi_137_s-l1600_cb5b4330-6113-418c-ae10-895429f6774d.png?v=1785980951","url":"https:\/\/ipng.store\/products\/hiff44sustack2inch","provider":"IPNG Automotive","version":"1.0","type":"link"}