FG PSI

[Triflex]

Does the fuel pressure remain constant. If I get 65 PSI at the shreader valve at idle what can I expect to get at 2000 RPM? Do I need to install the FPG inside the truck?

[todd]

need gauge inside to know exact but it does drop under load

[Triflex]

Theoretically then at idle (65psi) should be max if it drops under load and the under hood guage should be ok. Thanks I appreciate it.

[Rantheman]

on mine at free way speed I see about about 72 psi then when I floor it it drops to about 45 then when I let off it jumps up to 80 . hope that helps

[Triflex]

thanks, it helps a lot.

[Farmboy444]

where do hook the pressure gauge up on the OBS 7.3?

[Rantheman]

I hooked mine with the valve that reliefs fuel pressure i can will show you all

[Farmboy444]

yeah if you had some pics that be great i tried to figure it out but wasnt sure where exactly to put it

[Rantheman]

this is were I hooked mine up on my obs if i am wrong now would be the time to tell me

[Farmboy444]

thats where i was think of, where did you get a electric FP gauge and how much did it cost ya?