fass fuel pressure?

If you do a search on this one there have been a thread or 2 on it...mine stays at 11-12 no matter if at idle or mashed to the floor....
 
I pretty sure most come new around 15psi.You can change the spring behind the return fitting and get more if needed.Mine is running at 21psi at idle.
 
mine is running at 15/14 depending on temp outside. I can drop it down to 8/9 ish when hot roddin. I need to get a spring to up it to 30 ish anybody know where to get one.
 
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