PJ/PK/UN Rail Relief Blank

When making big power or trying to run higher fuel pressure, the rail pressure relief frequently becomes an issue as they are rated for factory fuel pressure. Maintaining fuel pressure becomes problematic as they can creep open and cause the pump to work harder. Low rail pressure is dangerous in performance applications; it could lead to engine damage.

Additionally, in some cases they fatigue over time causing issues in stock standard utes or mild tunes, especially when hitting rev limiter, higher fuel pressure targets or sharp negative changes in load. They pop open and throw a P0093 code (large fuel leak detected) along with the engine shutting off.
Deleting this part helps fuel pressure remain stable and eliminates the P0093 issue.