Radium FPD-XR, 3/8 NPT

The opening and closing of fuel injectors creates pressure pulses in the fuel rail which can lead to unstable fuel pressure.??íIn 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.??í

FPD-XR base pressure requirement = 43 - 78psi (static)
Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.