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Running @ 43.5 psi

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Old Dec 19, 2011 | 10:18 PM
  #1  
bigboy576103's Avatar
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Default Running @ 43.5 psi

I have been currious if anyone has put an adjustable regulator on there ride and set it to run at 42-43 psi..

lets say you have 80# injectors at 3bar and thats plenty of fuel for your setup, instead of running at standard 4 bar psi and be way overkill just turn the regulator down to accomidate the 80#/hr instead of 106# lb/hr .

If anyone has done this how did you tune this in the computer?

Thanks ray.

ps, i tried looking this up before posting and did not find
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Old Dec 20, 2011 | 01:24 PM
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I would assume all you would need to change in the tune would be the injector flow rate table. Someone correct me if I'm wrong. This guy has some good info on injectors: HPTuner experiments
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Old Dec 20, 2011 | 05:34 PM
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yeah and a few more minor changes in hpt i cant say off hand because im on reqular laptop and not my hpt truck laptop .

i run at 43.5 psi with dual walbros on a magnafuel regulator and is all good with 120 lb injectors on a driver box. have the walbros flow more at lower pressure and i did this to get the extra fuel to make upwards of 1000 awhp along with meth . this way @ 63 psi is 20 lbs of boost , at stock pressure and 20 psi id be at 80+ psi fp and imo thats too much for the walrbos . this way i went with bigger injector to feed the motor the fuel it needs .
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Old Dec 20, 2011 | 06:20 PM
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This may be a dumb question but how would the drop in fuel pressure effect the atomization of the fuel itself? Im gonna assume it doesnt or else people wouldnt drop the pressure that much.
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