I'm kind of lost on the FPR thing. I think I know how they work, but I have a few questions. Basically a FPR is like this: You have a base pressure (which is at idle) lets say 43 psi (think that's stock), and then as you boost, it will raise at a 1:1 ratio. So if I'm running a stock FPR and I'm boosting 19 psi my fuel pressure under boost would be 61 psi. Reason I'm asking this is because Jeff Fazio made what I thought was a good point when he said his base pressure was set to 30 psi and was running 22 psi of boost. Someone figured his base would be set at 50 psi, but 50 psi (base) + 22 psi (boost) would make his fuel pressure 72 psi, and he stated that he didn't believe that the stock system should go about 60-70 psi.
With that said... Would the ATS Regulator (raises base to 50 psi) be a good idea. I know these questions come up all the time and I hate to be the one to ask it, but with this setup: 550cc's (Supra), Either Wolfkatz or ATS Bored Rail, Walbro Pump would an ATS Regulator benefit me. I'm going to be running the factory fuel lines for the supply and the return. Basically I have no intention of changing anything but the rail, injectors, and pump. Lines are all staying the same. Since the ATS is a stock replacement I'll use it if it's recommended.
With that said... Would the ATS Regulator (raises base to 50 psi) be a good idea. I know these questions come up all the time and I hate to be the one to ask it, but with this setup: 550cc's (Supra), Either Wolfkatz or ATS Bored Rail, Walbro Pump would an ATS Regulator benefit me. I'm going to be running the factory fuel lines for the supply and the return. Basically I have no intention of changing anything but the rail, injectors, and pump. Lines are all staying the same. Since the ATS is a stock replacement I'll use it if it's recommended.