Correct fuel pressure regulator?

Fixing to order a fuel pressure regulator, this one has the correct -an fittings for the line I’m planning to run but I don’t know about “fuel pressure range”? Says it’s 40-75…is that what I need?

In stock configuration, fuel rail pressure is dependent on manifold pressure (or vacuum). I believe it is manifold pressure plus 39 psi or something like that.

And you didn't give us much to go on. What exactly are you doing? Makes a difference. You gonna run boost? Is it still a returnless system? A lot of variables.

07 Boss said:

And you didn't give us much to go on. What exactly are you doing? Makes a difference. You gonna run boost? Is it still a returnless system? A lot of variables.

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lol…sorry! I have another thread going about my build “Roush build” so I just assumed everyone would know…my bad! Yes I’ll be running an On3 76mm kit, e85, On3 fuel hat running 3 320 pumps, return style thinking 8an supply & 6an return (6 or 8 to rails?)hoping for 650rwhp.

There’s this regulator for about $70 less that LMR has too but it’s only 6an inlet/outlet. Guess I still see the advantage to running 8 supply then going to 6an inlet….but every time I got tuned on previous cars I always ran into fuel issues (could’ve been bad tuner)!

I’m hoping to only have to run 2 pumps at a time. I’m installing switches and relays to each pump to turn them on/off independently. Only cost $85 more with what I already have so why not I guesd