best fuel pressure regulator for rb25

[smoked240]

I have been needing a fuel pump and regulator for the longest time. Right now I'm pushing somewhere in the 250-300hp. I plan to be at 450 soon. Will the walboro 255 cut it at 500hp? And which would be the best pressure regulator? I have been looking at the tomei type l or type s. Which one would be best for me? Thanks for the help!

[redline racer510]

Raw brokerage sells a complete kit which uses an aeromotive fpr seems like a pretty good deal

[Detroit.Tee.Tee]

Tomei has a calculator on their site. It depends on a few factors really. Injector size, fuel pressure, line size. I have a single wal 255 and with my 850cc injectors and -6an fittings and lines the calculator said to make 450 hp, I'd need something like 364lph.

[smoked240]

Okay. Well ill have stock injectors for now. Which are like 380cc?? Not for sure on size. Later I will be going to larger. So ill have the 255lph pump,stock lines for now,with stock injectors.

[jr_ss]

Tomei, SARD, Aeromotive, etc will all do what you need it too. I was running 400+ crank hp on my SARD and it operated fine, plan on running into the 600's with the new setup on the same regulator...

[smoked240]

Could I have too much ever? Like if I went with the type l rated for very high HP.would I be okay?

[jr_ss]

If the regulator accepts -6 to -8 AN lines you'll have enough flow through it for 700hp+ and you'll never reach that point on a stock or close to stock bottomend. For your goals that's all you'll ever need. Why spend extra cash on something you'll never fully utilize?

[r33nota240]

a 255 fuel pump should do just fine for that hp unless u are planning e85 and i am running a aeromotive and have no problems with fuel pressure drop.