what is an LS1's average fuel pressure??
what is an LS1's average fuel pressure?? exacly how it says.. id post it in fueling but noboby ever answers stuff in there.. what PSI does a LS1 system run at usually???
No matter what, you need to upgrade the injectors. I'm running 42#'s (which most people run) to give me a bit of room to play. Also should upgrade the fuel pump with a walbro 255lph or something of the likes, nothing crazy.
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Staging Lane
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From: Vevay,IN
Originally Posted by LostCauseZ06
what kind of pressure tester do you use??
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it's supposed to be a steady 58 psi at all times for what it's worth.
if it's dropping under load then there is a problem somewhere in the fuel system. If it reads a little high or low it's probably just the gauge you are using or a problem with the regulator built into the fuel pump unit (99+). On mine it actually reads about 60psi at all times but I think the gauge just read a little high.
if it's dropping under load then there is a problem somewhere in the fuel system. If it reads a little high or low it's probably just the gauge you are using or a problem with the regulator built into the fuel pump unit (99+). On mine it actually reads about 60psi at all times but I think the gauge just read a little high.
Originally Posted by ArcticZ28
No matter what, you need to upgrade the injectors. I'm running 42#'s (which most people run) to give me a bit of room to play. Also should upgrade the fuel pump with a walbro 255lph or something of the likes, nothing crazy.
so if i get 42 lb injectors is it going to force me to get a tune before i start it??? will an injector change mess things up really bad??? or will it work the exact same but just be able to flow more??
Originally Posted by LostCauseZ06
so if i get 42 lb injectors is it going to force me to get a tune before i start it??? will an injector change mess things up really bad??? or will it work the exact same but just be able to flow more??
it's supposed to be a steady 58 psi at all times for what it's worth.
if it's dropping under load then there is a problem somewhere in the fuel system. If it reads a little high or low it's probably just the gauge you are using or a problem with the regulator built into the fuel pump unit (99+). On mine it actually reads about 60psi at all times but I think the gauge just read a little high.
if it's dropping under load then there is a problem somewhere in the fuel system. If it reads a little high or low it's probably just the gauge you are using or a problem with the regulator built into the fuel pump unit (99+). On mine it actually reads about 60psi at all times but I think the gauge just read a little high.
Bigger injectors won't increase fuel pressure only a new/better/booster pump will help with that...sometimes an old *** fuel filter that's clogged will reduce pressure as well...I def would upgrade the injectors for a 408 though no doubt...
