{"product_id":"radium-engineering-fuel-pulse-damper-fpd-xr-3-8npt-direct-mount-kits-20-0179","title":"Radium Engineering Fuel Pulse Damper Direct Mount Kits - FPD-R or FPD-XR","description":"\u003cp\u003e\u003cstrong style=\"color: rgb(255, 42, 0); font-family: montserrat;\" data-mce-style=\"color: rgb(255, 42, 0); font-family: montserrat;\"\u003eFitment Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-mce-style=\"font-weight: bold;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\" data-mce-style=\"color: rgb(0, 0, 0);\"\u003eUniversal Fit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-style=\"font-weight: bold;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\" data-mce-style=\"color: rgb(0, 0, 0);\"\u003eNote: Not Recommended for the Low Pressure Side of Mechanical Fuel Pumps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong style=\"color: rgb(255, 42, 0); font-family: montserrat;\" data-mce-style=\"color: rgb(255, 42, 0); font-family: montserrat;\"\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eWhat makes Radium FPDs unique?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eAlong with having the flexibilty of using common fittings, Radium Engineering FPD's use a vacuum\/boost reference port which allows for proper fuel pulse damper performance even at elevated fuel pressures. This becomes essential for boosted systems that use a 1:1 rising rate fuel pressure regulator.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eWhat is the difference between FPD-R and FPD-XR? \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eThe FPD-R (green top) is slightly shorter than the FPD-XR (black top) allowing it to be used in space-contrained applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eWhich Damper Do I Choose?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eThe FPD-R (Fuel Pulse Damper-Range) and FPD-XR (Fuel Pulse Damper-Extra Range) both have unique base \"static\" fuel pressure requirements:\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFPD-R base pressure requirement = 40 - 70psi (static)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFPD-XR base pressure requirement = 40 - 105psi (static)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eBase pressure is the fuel pressure measured when the fuel pump is running WITHOUT a vacuum line connected to the regulator.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eIMPORTANT: The ranges above are base static fuel pressures only. Any dynamic fuel pressure created by a rising-rate FPR outside of this range is acceptable, but only when the base \"static\" fuel pressure is set within these ranges and the vacuum\/boost reference line is connected.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eExample 1:\u003cbr\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eVehicle: Mitsubishi EVO\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eOEM Base Static Fuel Pressure: 43.5psi\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eBoost Pressure: 30psi\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eRising Rate Pressure Regulator? Yes\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eCan I use a FPD-R? Yes. Even though fuel pressure is 73.5psi at full boost, the FPD-R will work because the base static pressure was set within the 40-70psi requirement. However, the vacuum\/boost reference line must be installed. \u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eCan I use a FPD-XR? Yes. Also, the vacuum\/boost reference line does not need to be installed since maximum fuel pressure does not exceed 105psi. \u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eExample 2:\u003cbr\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eVehicle: BMW E46 M3\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eOEM Base Static Fuel Pressure: 72.5psi\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eBoost Pressure: 20psi\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eRising Rate Pressure Regulator? Yes\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eCan I use a FPD-R? No. Base static fuel pressure exceeds the 40-70psi requirement.\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eCan I use a FPD-XR? Yes. Also, the vacuum\/boost reference line does not need to be installed since maximum fuel pressure does not exceed 105psi.\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong style=\"color: rgb(255, 42, 0); font-family: montserrat;\" data-mce-style=\"color: rgb(255, 42, 0); font-family: montserrat;\"\u003eWhat's Included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eAnodized and laser engraved aluminum top, R=range or XR=extra range\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eAnodized aluminum body with male threads, 8AN ORB or 3\/8\" NPT\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eStainless steel hardware\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eRubber vacuum hose, 4mm ID\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eVacuum hose Y-fitting \u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong style=\"color: rgb(255, 42, 0); font-family: montserrat;\" data-mce-style=\"color: rgb(255, 42, 0); font-family: montserrat;\"\u003eProduct Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eThe opening and closing of fuel injectors creates pressure pulses in the fuel rail which can lead to unstable fuel pressure. In order to achieve a safe and consistent rail pressure, a fuel pulse damper (FPD) is often necessary. The FPD's internal diaphragm will absorb oscillating pulses and stabilize fuel pressure. This correction can be measured throughout the RPM range and can often help idle surge, especially with high flow injectors. Furthermore, a fuel pulse damper can help solve erratic lean air\/fuel ratio spikes, commonly experienced as \"stumbling\", that are difficult to tune out. \u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFor more in-depth information on the function of fuel pulse dampers, read the Radium blog.\u003c\/span\u003e\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"FPD-XR - 3\/8NPT","offer_id":40947476987984,"sku":"RAD20-0179","price":99.95,"currency_code":"USD","in_stock":true},{"title":"FPD-R - 3\/8NPT","offer_id":40947477020752,"sku":"RAD20-0178","price":89.95,"currency_code":"USD","in_stock":true},{"title":"FPD-XR - 8AN ORB","offer_id":40947477053520,"sku":"RAD20-0777","price":99.95,"currency_code":"USD","in_stock":true},{"title":"FPD-R - 8AN ORB","offer_id":40947477086288,"sku":"RAD20-0776","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0058\/0252\/4785\/files\/fuel-pulse-damper-fpd-xr-3-8npt-direct-mount-kits-radium-engineering_2.jpg?v=1728545531","url":"https:\/\/shop.redline360.com\/products\/radium-engineering-fuel-pulse-damper-fpd-xr-3-8npt-direct-mount-kits-20-0179","provider":"Redline360","version":"1.0","type":"link"}