Hi Guys, Can anyone tell me if there is a standard Subaru Fuel Pressure Regulator that can adjust fuel pressure up to 45 psi? Regards Non Culpa:horse:
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Guest Message by DevFuse
Fuel Pressure Regulator Question
Started by
Non Culpa
, Aug 23 2012 10:13 PM
7 replies to this topic
#2
1 Lucky Texan
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Posted 23 August 2012 - 10:29 PM
Hi Guys, Can anyone tell me if there is a standard Subaru Fuel Pressure Regulator that can adjust fuel pressure up to 45 psi? Regards Non Culpa:horse:
probably only adjust the stock one with some 'trick' like shimming or replacing a spring or something. Probably sealed up and not practical to alter. probably an aftermarket one is available set at a higher pressure - AEM, Megan Racing, etc.
um - what's wrong with the car?
Edited by 1 Lucky Texan, 23 August 2012 - 10:41 PM.
#3
Non Culpa
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Posted 23 August 2012 - 10:43 PM
Nothing wrong with the car, just doing some modifications that require a 45 psi FPR. I have looked at aftermarket FPRs, just thought that there might be a Subaru FPR with higher psi than the one I have at the moment, it's only 36.3 psi.
#4
1 Lucky Texan
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Posted 23 August 2012 - 11:10 PM
Nothing wrong with the car, just doing some modifications that require a 45 psi FPR. I have looked at aftermarket FPRs, just thought that there might be a Subaru FPR with higher psi than the one I have at the moment, it's only 36.3 psi.
ah - gotcha.
sry, dunno about STI or other FPR settings.
#5
Non Culpa
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Posted 24 August 2012 - 03:52 AM
Thanks 1 Lucky Texan, I am a member of another forum and they have just given me my answer. They tell me that a 2004 Impreza WRX STI and probably many others have the FPR that I require.
#6
john in KY
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Posted 24 August 2012 - 05:58 AM
Could also just restrict the return line to increase pressure.
#7
presslab
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Posted 27 August 2012 - 05:02 PM
I have successfully "crushed" a stock FPR to increase the pressure. This basically pre-loads the internal spring. A couple blocks of wood and a vice, not hard. Do a little at a time and test it until you're at the pressure you want.
#8
Non Culpa
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Posted 28 August 2012 - 03:30 AM
Thanks presslab, what a novel idea. I ended up buying an aftermarket FPR, but after we get the beast running I might give your suggestion a try and see how we go. Regards Non Culpa:D
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