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Fuel Pressure Regulator Question

  • Thread starter Thread starter Husky44
  • Start date Start date Apr 13, 2013

Husky44

10 Year Member
Sep 27, 2006
865
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74
Tacoma, WA
Apr 13, 2013
#1
  • Apr 13, 2013
  • #1
Is there such thing as too much fuel pressure?

91 5.0, stroked to 347, TF Street Heat Intake, TF heads. Walpro 255 LPH pump, 30# injectors.

I would like to run this Race Pump regulator, rated for 45-70# (looking for the dual outlet capability). Everything I read says stock motor should be set at about 40#; I'm not stock, but don't want to be in a situation where I can't set the pressure properly--is 45# going to be too much for my application?
 

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,721
214
Hillsborough county
Apr 13, 2013
#2
  • Apr 13, 2013
  • #2
Your maf should be set for your injectors. So at 40# your injectors are running at 30#... At 45# your probably going to run just a little rich. But that all depends on your combo I run mine at 43# and I have no problems. Anytime you increase the fuel pressure you increase the #ig on the injector. (to put it simply).
 
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