The maximum fuel rail pressure is limited regarding its absolute height for the protection of injection components. (abt-sportsline.de)
You can ask in garage to check a fuel pressure in fuel rail and straight after fuel pump (if they can). (mechanics.stackexchange.com)
The fuel injection control module, integral oil cooler, transmission adapter plate, common fuel rails, fuel filter assembly, fuel temperature sensor, and function block. (chevrolet.com)