how do you set this thing. which way to turn for what. I just got one and dont know how to use it. Its all installed and didnt get a manual because it was used.

 

The center bolt adjusts fuel press at 0 psi - basically the onset of boost. Turning the bolt in lower this pressure, outwards raises it. The bleeder valve bleeds off boost - this allows you to run different rates of rise in fuel press. The further in the bleeder valve is - the higher this rise in fuel press - vice versa.