ok well i bought the car with the aem fuel pressure regulator and i dont have a gauge so i dont know what psi i am running. my problem is i dont understand how to adjust the damn thing. i get that you loosen the nut then using a hex key you turn the shaft in the middle... but what does what? if i turn it left am i upping the pressure or is it going down. and does upping the pressure mean more fuel or less fuel? these maybe stupid questions but i need hel please....

heres a pic for ref.

 

get a gauge, that will eliminate all guess work.
as for HOW to do it, maybe someone else can help u

 

right but besides the gauge...

 

i understand what your saying, but i wouldnt even adjust it without a gauge, you could run too rich or too lean, throw engine codes and all that bolonga, but like i said above, as for how to use it someone else will have to help you there, i have a b&m and im changing it for aeromotive, so i dont know how to do aem's. good luck though

 

thanks for your input

 

Left drops pressure, Right raises.

 

cool thanks but does raising mean more fuel or less?

 

raise=more

 

you the man, thanks