The EVO VIII / IX Billet Fuel Rail features a large 0.69" ID bore to suit even the most fuel hungry engines. The rail is CNC machined from solid 6061 aluminum and black dipped anodized for a high quality surface finish. It is compatible with all fuel types including popular alcohol mixtures such as E85. Below is a size comparison with the OEM restrictive fuel rail.
The Radium fuel rail is the first and only on the market to support an (optional) fuel pulsation damper. The opening and closing of the 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 pulse damper should be used (especially with high flow injectors). The internal diaphragm will absorb oscillation pulses and stabilize fuel pressure. This correction can be measured throughout the RPM range and can often help an erratic surging idle.
OEM Configuration This option includes everything required to simply unbolt and replace the OEM fuel rail. First, a billet M14 inverted flare adapter is included to adapt the OEM hard line on the firewall to -6AN. Next, a pre-fabricated ethanol compliant -6AN PTFE hose is included to replace the OEM rubber hose and restrictive 2 bolt flange. A custom billet fuel pressure regulator adapter is included for the 3/8" NPT female end of the rail to reuse the OEM fuel pressure regulator.
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