i have a type r fuel rail (jdm) and type r injectors on my v16a and manifold.. anyway..i am running rich foulin my plugs out like in a week.. i am adding a fuel pressure regulator .. i just want to know what is the stock fuel pressure on the stock fuel reg.(type r) ? so il know on how low i will set the pressure ... and im running a spoon box too pls guys help me..

 

38-46 with vacuum hose
47-55 with out vacuum hose

 

cool dude..tanx very much for the info!!! laters