{"product_id":"radium-engineering-fpd-r-inline-fuel-pulse-damper","title":"Radium Engineering FPD-R Inline Fuel Pulse Damper","description":"\u003ch4\u003eStabilize Fuel Pressure and Eliminate Lean Stumble with the Radium Engineering Inline Fuel Pulse Damper\u003c\/h4\u003e\n\u003cp\u003eThe Radium Engineering RAD20-0199 FPD-R Inline Fuel Pulse Damper is a precision-engineered fuel system component that absorbs the pressure oscillations created by sequential fuel injector opening and closing events in performance fuel systems. The RAD20-0199 uses 8AN ORB port connections with an FKM O-ring seal for inline installation into any fuel line, housing an internal diaphragm calibrated for a base static fuel pressure range of 40-70 PSI (FPD-R Standard Range). A vacuum\/boost reference port on the RAD20-0199 allows it to function correctly at elevated fuel pressures in boosted systems with rising-rate fuel pressure regulators, maintaining consistent damping performance regardless of boost level. The result is a measurable stabilization of fuel rail pressure across the RPM range, solving lean stumble, erratic AFR spikes, and idle surge commonly seen in upgraded fuel systems ,  particularly with high-flow injectors on batch injection setups. Safe for use with all fuel types including E85.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAbsorbs injector-generated pressure pulses to stabilize fuel rail pressure across the entire RPM range\u003c\/li\u003e\n\u003cli\u003e8AN ORB port connections seal with FKM O-rings for a leak-free inline fuel line installation\u003c\/li\u003e\n\u003cli\u003eVacuum\/boost reference port enables correct operation in boosted rising-rate FPR systems at varying boost levels\u003c\/li\u003e\n\u003cli\u003eFPD-R Standard Range: 40-70 PSI base static fuel pressure ,  suitable for most naturally aspirated and boosted applications\u003c\/li\u003e\n\u003cli\u003eAnodized and laser-engraved aluminum top with anodized aluminum body ,  corrosion resistant and fuel safe\u003c\/li\u003e\n\u003cli\u003eCompatible with all fuel types including gasoline, E85, methanol, and alcohol blends\u003c\/li\u003e\n\u003cli\u003eCan be mounted at any angle including upside down ,  installation flexibility for tight engine bay routing\u003c\/li\u003e\n\u003cli\u003eRAD20-0199 is not compatible with return-style fuel systems ,  for returnless\/FPR systems only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eRAD20-0199\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRadium Engineering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eInline Fuel Pulse Damper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort Connections\u003c\/td\u003e\n\u003ctd\u003e8AN ORB (Male, Inlet and Outlet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Material\u003c\/td\u003e\n\u003ctd\u003eFKM (Fluoroelastomer) O-Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Port\u003c\/td\u003e\n\u003ctd\u003eVacuum\/Boost Reference Port (Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Pressure Range\u003c\/td\u003e\n\u003ctd\u003e40-70 PSI Base Static (FPD-R Standard Range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eAnodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Orientation\u003c\/td\u003e\n\u003ctd\u003eAny Angle Including Inverted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Compatibility\u003c\/td\u003e\n\u003ctd\u003eGasoline, E85, Methanol, All Common Fuels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eUniversal ,  Returnless\/FPR Fuel Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Location\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e850016183025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1x RAD20-0199 Radium Engineering FPD-R Inline Fuel Pulse Damper\u003c\/li\u003e\n\u003cli\u003eVacuum\/boost reference port fitting\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cstrong\u003eWhat does the RAD20-0199 do for a performance fuel system?\u003c\/strong\u003e\n\u003cp\u003eThe RAD20-0199 absorbs fuel pressure oscillations caused by injectors rapidly opening and closing. In upgraded fuel systems with high-flow injectors, these pulses can destabilize fuel rail pressure enough to cause lean stumble, erratic AFR readings, and rough idle. The RAD20-0199 damps those pulses for more consistent fuel delivery and improved drivability.\u003c\/p\u003e\n\u003cstrong\u003eWhat fuel line connection does the RAD20-0199 use?\u003c\/strong\u003e\n\u003cp\u003eThe RAD20-0199 uses 8AN ORB (O-Ring Boss) port connections on both the inlet and outlet. Use 8AN fittings with FKM O-rings for a leak-free connection. The ORB port is a standard connection type used throughout performance fuel system plumbing.\u003c\/p\u003e\n\u003cstrong\u003eIs the RAD20-0199 compatible with E85?\u003c\/strong\u003e\n\u003cp\u003eYes. The RAD20-0199 is compatible with gasoline, E85, methanol, and other alcohol-based fuels. The FKM O-ring seals are specifically chosen for chemical resistance to ethanol and methanol blends.\u003c\/p\u003e\n\u003cstrong\u003eDoes the RAD20-0199 work on a return-style fuel system?\u003c\/strong\u003e\n\u003cp\u003eNo. The RAD20-0199 is designed for returnless or FPR-regulated fuel systems only. Do not install it in a traditional return-style fuel system with a separate return line to the tank.\u003c\/p\u003e\n\u003cstrong\u003eWhat is the pressure range for the RAD20-0199?\u003c\/strong\u003e\n\u003cp\u003eThe RAD20-0199 FPD-R Standard Range is calibrated for 40-70 PSI base static fuel pressure. This covers the vast majority of naturally aspirated and turbocharged performance applications running common fuel pressure regulators. For systems outside this range, contact Radium Engineering for alternative models.\u003c\/p\u003e\n\u003cstrong\u003eDoes the RAD20-0199 work on turbocharged and supercharged engines?\u003c\/strong\u003e\n\u003cp\u003eYes. The vacuum\/boost reference port on the RAD20-0199 allows it to maintain correct diaphragm function at elevated fuel pressures in boosted applications with a rising-rate FPR. Connect the reference port to the intake manifold boost\/vacuum source for proper rising-rate operation.\u003c\/p\u003e\n\u003cstrong\u003eWhere in the fuel system should the RAD20-0199 be installed?\u003c\/strong\u003e\n\u003cp\u003eInstall the RAD20-0199 as close to the fuel rail inlet as possible for maximum effectiveness. It should be installed inline on the fuel feed line between the fuel pressure regulator outlet and the fuel rail inlet.\u003c\/p\u003e\n\u003cstrong\u003eWhat warranty does the RAD20-0199 carry?\u003c\/strong\u003e\n\u003cp\u003eThe RAD20-0199 is a Radium Engineering USA-made product. Contact Radium Engineering directly for warranty terms and support for this product.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRelieve fuel system pressure before disconnecting any fuel lines\u003c\/li\u003e\n\u003cli\u003eIdentify the fuel feed line between the fuel pressure regulator outlet and the fuel rail inlet\u003c\/li\u003e\n\u003cli\u003eInstall 8AN ORB fittings and compatible fuel line to connect the RAD20-0199 inline at the chosen location\u003c\/li\u003e\n\u003cli\u003eConnect the vacuum\/boost reference port to a manifold vacuum\/boost source using the included fitting and suitable vacuum hose\u003c\/li\u003e\n\u003cli\u003eTighten all 8AN ORB fittings to spec ,  do not overtighten the aluminum body ports\u003c\/li\u003e\n\u003cli\u003eInspect all connections for leaks before and after the first start\u003c\/li\u003e\n\u003cli\u003eRun the engine and confirm fuel pressure stability on a gauge before driving\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":45989370527823,"sku":"RAD20-0199","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/radium-engineering-20-0199-fpd-r-inline-fuel-pulse-damper.png?v=1782908197","url":"https:\/\/www.blackopsautoworks.com\/products\/radium-engineering-fpd-r-inline-fuel-pulse-damper","provider":"Black Ops Auto Works","version":"1.0","type":"link"}