Fuel pressure too low

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camry90

Member
Ok this is what I have
walbro intank
bored out fuel rail
aeromotive fpr(bypass)
when It idles, the pressure is at 42psi and even if I turn the screw, pressure won't go up... How come? Do I have to set it at high voltage? And how would I do that?
 
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GrpAGT4

New member
You need to replace the fuel pump relay with a jumper to run it in constant high volt mode. There should be a write up somewhere about it. Pretty easy mod mate :)
 
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camry90

Member
klue":2i9tmxfa said:
what injector are you using, and why do you want more than 42 psi?
Click to expand...
i have the stock one that was cleaned by RC engineering

i want to follow what ATS did. they modded the stock FPR to make 50+psi to make it seem like bigger injectors.
 
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GrpAGT4

New member
All you do is take 2 spade connectors, join them too about 3 cm of decent wire then brige two of the connectors in the fuel pump relay socket. I had it on my car but i took the walbro out cos it was friggan noisey. I think it was bottom left to top right in the socket. Not 100% though. was a while ago.
 
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AvivB

New member
Here are the schematics, let me know if you need something more.

original.jpg

original.jpg


Aviv.
 
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AvivB

New member
Pin 1 & pin 4 of the "fuel pump control relay" on the upper left corner of the first photo.
This will hold the pump to run at max power all time.
 
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