hi there looking for some advice on fitting my afpr did a goole serch can find what brand 2 get an what pressure 2 run but cant find a clear fitting guide now am i correct in thinking i fit my rail adapter in place of the oem reg use the pipe thats all redy there same with vacuume pipe and cut in2 the out feed from the filter join it 2 the in feed of the regulater then from the out feed of the reg 2 the hose originaly cut frm the out feed from the filter if you know what i mean so the fuel runs through the filter in2 the reg out the reg and along the original hose to the rail can any 1 confirm that or even show pics of there install

 

BUMP

 

Not done one my self but I always thought that the reg was fitted on to the return side of the fuel system as wired as that may sound

 

You fit the adaptor in place of the OEM regulator. One pipe from the adaptor to the AFR, then the fuel pipe from the OEM reg to the FPR and the the small vac hose from the reg to the AFR. Using suitable pipe if you need them to be longer.

 

so you still have to run the oem regulator as well as the adjustable one?

 

Not mate, you dispose of the old regulator completely.

You do know you also need an adapter to fit an aftermarket regulator don't you? It goes where the standard one is removed from.

 

 

Yes, you seem to be on the right path there.

Outlet from fuel filter to inlet of new regulator.

Outlet of new regulator to inlet of rail adapter.

Vacuum connection of new regulator to intake manifold

 

Had you spotted Tamloz's post is last March.

my understanding is Fuel filter to-injectors-to FPR-to return to tank
Trev

 

Ahh, do you mean the pressure is regulated on the return path?

 

I think your right Trev, my mistake! It'll be a similar process but the other direction!

 

Yes

 

Pressure has to be regulated after the rail pal, otherwise it wouldn't be doing any good. Whole point here is to inprove and maintain better the fuel pressure to your injectors.

As above, adaptor on the end of the rail where the standard pressure reg is, pipe to FPR, Pipe to return.

This way the gauge (if yours has one) will display the Fuel pressure in the rail.

Putting it pre rail would probably blow your engine....as such if your at all unsure of how to do this, take it to someone in the know pal.

 

To the OP:

Have you actually removed anything from the car yet? And do you actually need this FPR? The standard one should be good for at least 300bhp surely? Have you fitted larger injectors?

 

Depends what version OP has, sorry if I have missed this but what car you got?