Hi,
got my Aem fpr today and i wonder what is the ideal pressure to the regulator?
Running on 370awhp, Aeromotive 340L pump, 850cc injector & pump gas ron97

 

With that setup I would think your best off with base 43.5 P.S.I. I don't really see a need for you to require an aftermarket FPR on that setup though...

At least I don't think the Aeromotive outruns the OEM FPR.

 

but im running at 4 bar on my fpr...is the pressure to high?

 

4 bar is 58 P.S.I.

So it really depends. If you need the higher pressure to get more fuel instead of larger injectors then leave it, but if you can run it at a lower pressure I don't see why you wouldn't.

 

Thanks Evo 9 Guy...

 

i thought it should be from 40 tp 60 psi

 

should be 3 bar at idle with vacuum pipe disconnected

 

+1, this is stock setting

 

I posted this information last year after swapping pumps....

UPDATE: As a reference, my car stock with Walbro has base pressure of 47.5psi (3.23 bar) and my buddies car with Walbro has a base pressure of 46psi (3.13 bar). With 18in on the boost gauge my fuel pressure is ~39psi.

You need to factor in the amount of boost you hope to run and see how this plots on the pumps flow capability. Remember, if you set the baseline to 45psi and then run 35psi of boost you need to see how the pump flows at 80psi.

 

Thanks Guys great info...