DescriptionThe 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. What makes Radium FPDs unique? Along 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.Features 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. 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). These fittings seal to the billet housing using Viton O-rings. Using the supplied M6 bolts/nuts, the FPD kit can be mounted at any possible angle including upside down. For best results, the damper should be plumbed as close to the fuel rail(s) as possible. Like any fuel system part, the FPD kit should be kept away from excessive heat areas.This product is safe for use with all fuel types including alcohol blends such as E85.IncludedAnodized/laser engraved aluminum top, R=range or XR=extra rangeAnodized aluminum body threaded for 8AN ORBAnodized aluminum ORB adapter fittings, selectable sizGasoline and alcohol (E85) resistant diaphragmStainless steel M6 mounting bolts and nutsRubber vacuum hose, 4mm IDVacuum hose Y-fitting NOTE: This dampener requires the Radium Fuel Rail Kit
