Radium FPD-R Inline Fuel Pulse Damper Kit (20-0199) Radium Engineering

FPD-R Inline Fuel Pulse Damper by Radium Engineering

The 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.

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.

Features

• Anodized aluminum housing with a large 0.69″ center bore
• Two in-line inlet/outlet ports machined with 3/4″-16 UNF threads for 8AN ORB fittings
• At 1.98″ tall, the FPD-R can be used in space-contrained applications
• FPD-R base pressure requirement = 40 – 70psi (static)
• Includes adapter fittings which seal to the billet housing using viton O-rings
• An 1/8″ NPT female port is threaded into the center of the fuel pulse damper. A fuel pressure gauge is commonly used here or other sensors for pressure or temperature data
• Safe for use with all fuel types including alcohol blends such as E85
• Vacuum/boost reference port allows for proper performance even at elevated fuel pressures

Please Note

• 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.

Applications

• Universal

What’s In The Box?

• 1 – Anodized/laser engraved aluminum top
• 1 – Anodized aluminum body threaded
• 1 – Fuel resistant diaphragm
• 1 – Rubber vacuum hose, 4mm ID
• 1 – Vacuum hose Y-fitting
• 1 – 1/8″ NPT plug
• Anodized aluminum ORB adapter fittings, selectable size
• Stainless steel M6 mounting bolts and nuts

References

• Installation Instructions

Warranty

• Manufacturer Standard Warranty