fass & fuel psi

[Mario210]

I had a fass installed last week. This morning i installed an inline fuel pressure gauge. My psi was 23. 5 at idle and i am thinking thats to high for my needs. How do you lower the psi??? I could not find an answer on the search forum, but found alot of guys agreeing on 18 psi at ilde.



05 cc sb srw 4x4 E/J/A silverline afe gauge cluster

 

[p-Bar]

I think I remember reading that FASS will send you another spring for the regulator on the unit. Personally I think for the money you spend on a brushed motor pump they should include a few different springs for dialling in to your situation. Oh well... .

 

[Prairie Dog]

FYI, fass pumps are brushless now.



Scotty

 

[Highfinance97]

when i bumped up my pressure i put in a brass washer and it went from 15-23psi. just where i want mine.



But as for you i wonder if yours might have a washer, If not just find different springs and do a trial and error





Michael

 

[steved]

You change springs to adjust the PSI... they are not "shimmed".



steved