Need Fuel Pressure Reading Someone

[redstangs9308gt]

With the gt500 fuel pump kit, 60lbs injectors how much fuel pressure yall seeing on the fuel rail pressure sensor at idle? Mine is showing 38-40.

 

[702GT]

38-45 is pretty standard. Stock pump here, Livewire says 38-40 all day.

 

[JeremyH]

Depends on what delta pressure is commanded to in the tune.

Stock delta pressure is 39-40psi so with -20 vac at idle (-2 vac is -1 psi) it should read 30psi at idle.

A quick rev or stab of the throttle should read 50-55psi. As well as at key on prime.

 

[tmcolegr]

With the gt500 fuel pump kit, 60lbs injectors how much fuel pressure yall seeing on the fuel rail pressure sensor at idle?

Depends on what delta pressure is commanded to in the tune.

Stock delta pressure is 39-40psi so with -20 vac at idle (-2 vac is -1 psi) it should read 30psi at idle.

A quick rev or stab of the throttle should read 50-55psi. As well as at key on prime.

that's very close to what I see with that exact combination - 28 PSI at idle.