fuel pressure dropping

[AKHILF574]

I got a 2003 6.0 here a about a month ago and it was already studded. I put a sct and got matts tunes and the srl++. I finally got my gauges installed and I am seeing my fuel pressure is about 51 at idle and then I think I saw it get to 42 at WOT. The fuel filters were just changed also. So i'm thinking an air dog II is in y near future. Im planning on running 190's and I don't know what turbo I want yet.

[pizza pig]

first things first, i'd get the Ford updated fuel pressure regulator spring kit, your spring is worn out it seems, thats why you're seeing a rapid drop in pressure. Do this before your current injectors hate you and kick the bucket. with 190's an airdog is a must with crossover lines. Lots of people are having great luck with the powermax turbos, especially with 190's

[06powerstroke06]

If you are planning on getting 190s just go ahead and get the Airdog II

[AKHILF574]

I put the regulator kit on and it now is around 66 and idle and cruising but i can still get it to drop to the low 40's i think i even saw around 38 at around 90 mph then once it shifted to over drive it shot back up

[sly1types]

how many miles are on your truck?

[01redcrew]

sorry to be off subject. But how does the slr++ run

[SickStroke6.0]

You could also try installing the 6.4 banjos.

[AKHILF574]

Its got 90,000 now. And the srl++ is nice no complaints and its very clean. Ill end up trying the banjos this week but i have a funny feeling its not going to help get out of the 40's

[Arctic Fox]

Originally Posted by AKHILF574

Ill end up trying the banjos this week but i have a funny feeling its not going to help get out of the 40's

The banjo bolt upgrade will not make a difference in the fuel pressure you are seeing at the gauge... but it will let more fuel get through to the injectors.

[stevezee]

sounds like my prob i had on my 07 not sure if 03 is the same but i had to install a raptor pump after my airdog2 just to hold 62psi but i was runing 225s at the time if i were u id try the airdog. since u gotta get it anyway u might aswell upgrade now....