{"product_id":"radium-v2-fpd-r-fuel-pulse-dampener-8an-orb","title":"Radium V2 FPD-R Fuel Pulse Damper, 8AN ORB","description":"\u003cp\u003eThe \u003cstrong\u003eRadium Engineering 20-0776 V2 FPD-R\u003c\/strong\u003e is a compact 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-R 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 (20-0776) 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 body — ideal 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\u003eCompact range: 40-70psi base static pressure\u003c\/strong\u003e — ideal for most OEM-based fuel systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShorter body than FPD-XR\u003c\/strong\u003e — designed for space-constrained engine bay installations\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\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 (R = range, green)\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\u003e20-0776\u003c\/strong\u003e — V2 FPD-R, 8AN ORB (this damper — 40-70psi base static range, compact body)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20-0777\u003c\/strong\u003e — V2 FPD-XR, 8AN ORB (40-105psi base static range, extended range)\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. For higher base static pressures, see Radium 20-0777 FPD-XR.\u003c\/em\u003e\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":48591094350056,"sku":"20-0776","price":3751.74,"currency_code":"THB","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0354\/8135\/4376\/files\/20-0776_de99e343-8225-449f-b74d-a89e884de244.jpg?v=1779942731","url":"https:\/\/www.platinumracingproducts.com\/en-th\/products\/radium-v2-fpd-r-fuel-pulse-dampener-8an-orb","provider":"Platinum Racing Products","version":"1.0","type":"link"}