im tryin to get my fuel pressure set correctly but i have a few questions but first my setup

dohc zc with a b&m fpr and gauge..........

first question: what do you go by to set ur pressure, is it at idle or when you crack the throttle?............. the reason why i ask is because when i crack my throttle my pressure gauge needle jumps up 5-6lbs.......... is my fpr not working properly or should i just install a factory unit? if so which one should i use for my zc......... thanx guys............. also what pressure should i be at?

 

The spec is 35-42 psi at idle with the vacuum hose disconnected.

 

wow......... my pressure must be waayy off then........ thanx

 

set it back to around 35-36 with the hose off and it had a rough idle and would hesitate on acceleration.......... any other ideas?

 

Any codes?

 

u set it and then put the hose on and check the pressure, i did mine and i got it to 42 psi but with the hose off it shoots up to like 60, just **** with it and ull get it eventually