Mazda DISI High Pressure Rail Relief Valve

The factory setting for the high pressure rail valve on the Mazda Speed is set at 1877 psi. The OEM valve is good for getting OEM power, when adding additional boost, tuning and add on components to support more power additional fuel will be needed. The HPFP Upgrade rail valve is set to open at up to 2250psi, thus offering additional fuel and better fuel atomization to accommodate the demands for high horsepower applications. All the valves are tested at the factory to verify functionality and release pressure prior to shipping. They are designed to support the OEM location so no modifications will be needed during install.

Product Added: June 25, 2011
Part Number: hpfp00007