Adjustable Fuel pressure regulator help???
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From: Merthyr Tydfil
Anyone know how to fit one?? or knows for an On-line Guide???
I removed it off one off my impreza's that I stripped a few months ago! Its Sytec make i think??? I got the hoses & t piece & regulator with gauge! Is that all thats needed???? Want to fit it to my V3 555 Type R!
Any help is much appreciated! Thanx!
I removed it off one off my impreza's that I stripped a few months ago! Its Sytec make i think??? I got the hoses & t piece & regulator with gauge! Is that all thats needed???? Want to fit it to my V3 555 Type R!
Any help is much appreciated! Thanx!
Hi m8
try this guide,maybe help
It's pretty simple, mate.
You should have 4 fittings in total if its an adjustable reg.:
- One will be fuel feed (which comes from the rails)
- One will be fuel return (which goes back to the tank)
- One will be for a gauge (if its an adjustable one)
- One will be a vacuum line which goes to your intake manifold (like where your stock one goes)
To work out which fuel line goes back to the tank, have a look at the fuel filter and then trace the lines back to the firewall. One is fuel feed (it connects to the filter), one is a line for the charcoal cannister, the other is fuel return
Here is an SX hooked up

This is a Japanese Sard regulator.The silver line out the top is the vacuum line, the blue fitting on the side is the fuel in from the rails, the blue line on the bottom is fuel out for the return to the tank and the blanked off thread on the other side is for the gauge.
try this guide,maybe help
It's pretty simple, mate.
You should have 4 fittings in total if its an adjustable reg.:
- One will be fuel feed (which comes from the rails)
- One will be fuel return (which goes back to the tank)
- One will be for a gauge (if its an adjustable one)
- One will be a vacuum line which goes to your intake manifold (like where your stock one goes)
To work out which fuel line goes back to the tank, have a look at the fuel filter and then trace the lines back to the firewall. One is fuel feed (it connects to the filter), one is a line for the charcoal cannister, the other is fuel return
Here is an SX hooked up

This is a Japanese Sard regulator.The silver line out the top is the vacuum line, the blue fitting on the side is the fuel in from the rails, the blue line on the bottom is fuel out for the return to the tank and the blanked off thread on the other side is for the gauge.
If your just replacing the standard regulator, then you need an adapter to bolt where the OEM regulator is as it's mounted to the end of the fuel rail. Something like this. From the adapter you run a pipe to your new FPR's inlet. Then connect the return from the OEM FPR to the new one and the vacuum line.
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