Alright, just installed a B&M Fuel Pressure Regulator with the matching guage that sits on top of the fuel filter. All I have done so far is an air intake (had the car under 2 months, dont hate on me yet!) and am wondering if anyone knows to what psi the fuel pressure should be. I will be getting a header and an exhaust soon, so thats why I got this now, just so I wouldn't have to worry later. So, if anyone knows, what is the stock pressure? and what psi should I use for what I have now?

 

Stock pressure is 40-47psi with the vac line off or pinched. You don't need anymore than that with basic mods, the ecu will make any compensation needed.