This product is safe for use with all fuel types including alcohol blends such as E85. Like any fuel system part, the FPD kit should be kept away from excessive heat areas. For best results, the damper should be plumbed as close to the fuel rail(s) as possible. Using the supplied M6 bolts/nuts, the FPD kit can be mounted at any possible angle including upside down. These fittings seal to the billet housing using Rubber O-rings. Depending on the size of the fuel feed hose used, there are 3 kits to choose from which include different male adapter fittings (-6AN, -8AN, -10AN). The kit features an anodized aluminum housing with a large 0.69" center bore that uses two in-line inlet/outlet ports that are machined with 3/4"-16 UNF threads for 8AN ORB fittings. Highly resistant to wear and tear, these parts will handle the toughest conditions offering long-lasting service. Designed using the latest computer simulation and modeling techniques, they will exceed your expectations in every way. Want to improve fuel delivery to squeeze extra power out of your engine? Choose from top-quality Radium performance fuel system parts. Furthermore, a fuel pulse damper can help solve erratic lean air/fuel ratio spikes, commonly experienced as "stumbling", that are difficult to tune out. This correction can be measured throughout the RPM range and can often help idle surge, especially with high flow injectors. The FPD's internal diaphragm will absorb oscillating pulses and stabilize fuel pressure. In order to achieve a safe and consistent rail pressure, a fuel pulse damper (FPD) is often necessary. The opening and closing of fuel injectors creates pressure pulses in the fuel rail which can lead to unstable fuel pressure. This product is safe for use with all fuel types including alcohol blends such as E85.Range In-line Fuel Pulse Damper Kit (20-0199-06) by Radium®. For best results, the damper should be mounted directly onto the fuel rail(s). The FPDs can be mounted at any possible angle including upside down. The 8AN ORB (3/4"-16 UNF threads) version seals using a Viton O-ring while the 3/8" NPT variation seals with the tapered pipe threads. The anodized aluminum housing features two selectable threaded male fittings. Base static fuel pressure exceeds the 40-70psi requirement. Also, the vacuum/boost reference line does not need to be installed since maximum fuel pressure does not exceed 120psi.Ĭan I use a FPD-R? No. 
However, the vacuum/boost reference line must be installed.Ĭan I use a FPD-XR? Yes.
#RADIUM FUEL DAMPER FULL#
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. 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.Ĭan I use a FPD-R? Yes. The ranges above are base static fuel pressures only. FPD-XR base pressure requirement = 40 - 120psi (static)īase pressure is the fuel pressure measured when the fuel pump is running WITHOUT a vacuum line connected to the regulator.FPD-R base pressure requirement = 40 - 70psi (static).The FPD-R (Fuel Pulse Damper-Range) and FPD-XR (Fuel Pulse Damper-Extra Range) both have unique base "static" fuel pressure requirements: The FPD-R (green top) is slightly shorter than the FPD-XR (black top) allowing it to be used in space-constrained applications. What is the difference between FPD-R and FPD-XR? This becomes essential for boosted systems that use a 1:1 rising rate fuel pressure regulator. Furthermore, a fuel pulse damper can help solve erratic lean air/fuel ratio spikes, commonly experienced as "stumbling", that are difficult to tune out.Īlong with having the flexibility 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.
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