on a 2004 truck and measured wide open throttle fueling throughout the rpm band? I'm very curious as to the results. I'd do it myself but my test guage hose is too short for street testing and I can't dyno the truck and look at it during the run (no AWD dyno available).

 

63 at idle 61 @ WOT

 

Okay...

What kind of truck? Did it have the "dead head" fuel rail system with the in tank regulator?

 

same truck in sig.

 

I'm not sure that ANY of the LSx based trucks use the returnless-type (dead-head)fueling system....any of us that have swapped to LSx manifolds and injectors have had to either find '97 C5 rails (the ONLY year of return-type feuling that was on an LS1) or have had to buy the parts to convert our systems to returnless

 

I say "dead head" because the fuel rail doesn't have a return from it on mine.

 

I don't have a fuel return from my fuel rails on my truck.

 

04-05 is returnless.

 

huh.....well that's good to know, I'll file that away for future reference

 

63psi @ idle as of an hour ago