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fuel psi

667 views 1 reply 2 participants last post by  gtspowerstroke 
#1 ·
what kind of fuel psi is safe for a 99 7.3L? I am running 55 psi with a chip installed and I'm not sure of the safe psi to take my pressure up to. thanks!
 
#2 ·
I would leave it right there. No need for more. I've ran as much as 80 but lost 10-15 hp in doing so. I've also found running a higher pressure gave me a rolling idle that go real anoying.
 
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