Becomes, THIS !

A single fuse box similar to the fuel injected engines.

Changes for 2005 EFI ENGINES

New fuel pump module for 8.1L with fuel pressure regulator

Fuel rail now has a pulse damper and NO regulator

NEW FUEL SYSTEM FOR THE 8.1L ENGINES:

The new 8.1L fuel pump module has the pressure regulator mountedon the high pressure pump. This change requires a new vacuum hose to the regulator and new fuel lines. There is now only one fuel line to the fuel rail.

The pulse damper on the rail dampens fuel pump pulses in the rail providing a smooth flow of fuel to the injectors.

Other EFI changes include new ECM calibrations, a new flush fitting (shown on next page) and improved Bussman box isolation with rubber isolators.

All V6’s and small block V8’s get a new thermostat housing for improved temperature regulation.