{"product_id":"radium-v2-fpd-xr-extended-range-fuel-pulse-dampener-8an-orb","title":"Radium V2 FPD-XR Extended Range Fuel Pulse Damper, 8AN ORB","description":"\u003cp\u003eThe \u003cstrong\u003eRadium Engineering 20-0777 V2 FPD-XR\u003c\/strong\u003e is an extended range fuel pulse damper for high-performance and boosted fuel systems. Designed to absorb oscillating pressure pulses created by fuel injector opening and closing, the FPD-XR stabilises fuel rail pressure across the entire RPM range — correcting idle surge, erratic lean AFR spikes, and \"stumbling\" that are difficult to tune out, especially with high-flow injectors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eV2 Update:\u003c\/strong\u003e Even after tightening, the 8AN ORB damper (20-0777) swivels freely, allowing the vacuum reference port to be clocked 360° for easy routing in any installation.\u003c\/p\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eWhat Makes Radium FPDs Unique?\u003c\/h3\u003e\n\u003cp\u003eUnlike basic fuel pulse dampers, Radium FPDs feature a \u003cstrong\u003evacuum\/boost reference port\u003c\/strong\u003e that allows the damper to maintain correct performance even at elevated fuel pressures. This is essential for boosted applications running a 1:1 rising rate fuel pressure regulator, where fuel pressure rises with boost and a non-referenced damper would become ineffective.\u003c\/p\u003e\n\n\u003ch3\u003eFPD-R vs FPD-XR — Which Do I Choose?\u003c\/h3\u003e\n\u003cp\u003eBoth dampers share the same function but have different base static fuel pressure operating ranges:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFPD-R\u003c\/strong\u003e (green top, 20-0776) — base static pressure: \u003cstrong\u003e40-70psi\u003c\/strong\u003e. Slightly shorter for space-constrained applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFPD-XR\u003c\/strong\u003e (black top, 20-0777) — base static pressure: \u003cstrong\u003e40-105psi\u003c\/strong\u003e. Extended range for higher base pressure applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBase pressure\u003c\/strong\u003e = fuel pressure measured with the pump running and \u003cem\u003eno\u003c\/em\u003e vacuum line connected to the regulator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The ranges above are base static pressures only. Dynamic pressure created by a rising-rate FPR outside this range is acceptable, provided the base static pressure is set within the specified range and the vacuum\/boost reference line is connected.\u003c\/p\u003e\n\n\u003ch3\u003eWorked Examples\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eExample 1 — Mitsubishi EVO:\u003c\/strong\u003e OEM base static pressure 43.5psi, 30psi boost, rising rate FPR.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFPD-R: ✔ Yes — base pressure within 40-70psi range. Vacuum\/boost reference line must be connected.\u003c\/li\u003e\n  \u003cli\u003eFPD-XR: ✔ Yes — max fuel pressure (73.5psi) does not exceed 105psi. Reference line not required but recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExample 2 — BMW E46 M3:\u003c\/strong\u003e OEM base static pressure 72.5psi, 20psi boost, rising rate FPR.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFPD-R: ✘ No — base static pressure exceeds the 40-70psi range.\u003c\/li\u003e\n  \u003cli\u003eFPD-XR: ✔ Yes — max fuel pressure (92.5psi) does not exceed 105psi. Reference line not required but recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended range: 40-105psi base static pressure\u003c\/strong\u003e — suits a wide range of high-pressure fuel systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVacuum\/boost reference port\u003c\/strong\u003e — maintains correct damper performance under boost with a rising rate FPR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° swivel vacuum port\u003c\/strong\u003e — V2 design allows clocking after installation for easy routing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8AN ORB connection\u003c\/strong\u003e — Viton O-ring sealed, compatible with standard AN fuel rail fittings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3\/8\" NPT version also available\u003c\/strong\u003e — tapered pipe thread seal (see 20-0776 for FPD-R)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounts at any angle including upside down\u003c\/strong\u003e — flexible installation for any fuel rail layout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eE85 and alcohol fuel safe\u003c\/strong\u003e — compatible with all fuel types\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnodised and laser engraved aluminium housing\u003c\/strong\u003e — premium finish, permanent identification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAnodised and laser engraved aluminium top (XR = extra range, black)\u003c\/li\u003e\n  \u003cli\u003eAnodised aluminium body with 8AN ORB male threads\u003c\/li\u003e\n  \u003cli\u003eStainless steel hardware\u003c\/li\u003e\n  \u003cli\u003eRubber vacuum hose, 4mm ID\u003c\/li\u003e\n  \u003cli\u003eVacuum hose Y-fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eAvailable Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20-0777\u003c\/strong\u003e — V2 FPD-XR, 8AN ORB (this damper — 40-105psi base static range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20-0776\u003c\/strong\u003e — V2 FPD-R, 8AN ORB (40-70psi base static range, shorter body)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eWhy Radium Engineering?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✔ Designed and manufactured in the USA\u003c\/li\u003e\n  \u003cli\u003e✔ Vacuum\/boost reference port — industry-leading performance under boost\u003c\/li\u003e\n  \u003cli\u003e✔ V2 360° swivel vacuum port — easy installation in any orientation\u003c\/li\u003e\n  \u003cli\u003e✔ Trusted by professional motorsport teams and serious enthusiasts worldwide\u003c\/li\u003e\n  \u003cli\u003e✔ Exclusively distributed in Australia by Coore\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eGenuine Radium Engineering product. Stocked in Sydney for fast Australian delivery. Best mounted directly on the fuel rail. Download installation instructions for full setup guidance.\u003c\/em\u003e\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":48591094317288,"sku":"20-0777","price":109.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0354\/8135\/4376\/files\/20-0777_d68b4694-303f-4259-abe7-ebec90dd4f6f.jpg?v=1779942727","url":"https:\/\/www.platinumracingproducts.com\/de-de\/products\/radium-v2-fpd-xr-extended-range-fuel-pulse-dampener-8an-orb","provider":"Platinum Racing Products","version":"1.0","type":"link"}