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Fuel Injector Pulsation Damper
This is the same Fuel Injector Pulsation Damper found in the stock fuel rails for the WRX STI.
The opening and closing of the injectors creates pulses in the fuel rail, which can lead to unstable fuel pressure. This damper should be used (especially with high flow injectors) in order to achieve a safe and consistent rail pressure. The internal diaphragm will absorb oscillations and smooth fuel pressure. This correction can be measured throughout the RPM range and can often help an erratic surging idle.
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.
This OEM quality damper features a 8AN male thread with impregnated pipe thread paste.
The FPDs can be mounted at any possible angle including upside down. For best results, the damper should be mounted directly onto the fuel rails.
This product is safe for use with all fuel types including alcohol blends such as E85.
- Anodized and laser engraved aluminum top
- Anodized aluminum body with male threads, 8AN ORB
- Stainless steel hardware
- Rubber vacuum hose, 4mm ID
- Vacuum hose Y-fitting
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Radium Fuel Pulse Damper (8AN) / 20-0176 Fits
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