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 is 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 that are difficult to tune out.
The kit features an anodized, laser etched and engraved aluminum housing (shown below). It has a large 0.69" center bore that uses two inline inlet/outlet ports that are machined with 3/4"-16 UNF threads for -8AN O-ring fittings.
Depending on the size of the fuel feed hose used, there are 3 kits to choose from for different male adapter fittings (-6AN, -8AN, -10AN). These fittings seal to the billet housing using Viton O-rings.
The included fuel pulse damper (FPD) mates with 3/8" NPT threads. A billet aluminum NPT plug is included for the spare 1/8" NPT machined port which can be used for monitoring fuel pressure with a sensor or gauge (sold separately HERE).
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.
Fuel Injector Pulsation Damper also available by itself and features a 3/8" NPT male thread with impregnated pipe thread paste.