Fuel pressure pump Inline add on?
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
That's too low should be 40-45psi. You need to diagnose what's wrong with your fuel system. Maybe a clogged fuel filter, sock or a bad pump or Fuel pressure regulator.
Team Owner
Joined: Sep 2001
Posts: 62,085
Likes: 1,724
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Too low, should be about 42-45ish.
Change the fuel filter if it has never been, or not recently changed, but I suspect your pump is dying. The FPR can go out as well.
You can replace the pump with a Walbro or other Racetronix unit, and if you do that, you need to do their in-tank wiring upgrade as well as their piggyback harness if youre adding any real pumping power over stock.
The ECM does not care, its designed assuming a pressure value, and uses a pulse width and an injector size in its calculations.
Change the fuel filter if it has never been, or not recently changed, but I suspect your pump is dying. The FPR can go out as well.
You can replace the pump with a Walbro or other Racetronix unit, and if you do that, you need to do their in-tank wiring upgrade as well as their piggyback harness if youre adding any real pumping power over stock.
The ECM does not care, its designed assuming a pressure value, and uses a pulse width and an injector size in its calculations.
