fuel rails my first mod

[95guy]

Hi clubbers.

Just wondering if I have fuel rails on my car as I know nothing about subis, but am very keen to learn.

I was told if you don't have em you can get wear on one of the pistons?

dunno

any help will be rad

Thanks guys

[ADIKT]

Yes you do have fuel rails,

You were most likely told some information about doing a 'split fuel rail' mod

Google - Split Fuel Rail Subaru - read a few links and you will soon get the picture

[Andy_Mac]

They all have fuel rails. If they don't have split rails then the last cylinder can get a fuel shortage under high loads. Basically in stock form think of it as one big loop going to the cylinders one after the other so if the fuel pressure isn't keeping up then the last one in the line will get low. The split rail mod splits the flow into two paths left and right heads each get a dedicated line. And in general keeps things more even between each cylinder.

Haven't done it myself so my knowledge is purely from reading others experiences so someone who has physically done it themselves will probably do a better job explaining it.

Beat me to it adikt.

Also if car is stock, as you say its the first mod you're thinking about, i wouldn't really say its needed. People only seem to do it on medium to large power builds

Edited November 10, 2014 by Andy_Mac

[scooby-wrx]

What year / model do you have?

EJ20’s have fuel rails like these (injectors are red bits sticking out).

4th cylinder often has issues, so people tend to split the fuel lines like this:

http://forums.nasioc.com/forums/showthread.php?t=1909985

Good luck

Edited November 10, 2014 by scooby-wrx

[boon]

I don't know about that "4th piston often has problems" bit - I think it might be somewhat hearsay.

Put it this way - flat out, 1 of my injectors can dump approximately the same amount of fuel as all 4 on a WRX. And I don't have fuelling issues, with non-split factory rails. If you think about how the fuel pressure setup works (FPR at the end of the rails) you should always have fuel pressure at the injector, unless your pump can't keep up with the flow + pressure demand.

[Joker]

its only an issue if your car aint stock.....

there i said it

dont put a boost tap in, wind up the boost or fiddle with anything and you're sweet

[insert #Tui advert : yeah right]

[95guy]

I really don't know the history of this car but its not stolen lol

its non sti done mega ks, has a leaking rocket cover. been lowered blow off poddie.and still goes hard, doesn't move my face like Arnold wisemans RS kickn tho !

Thanks to everyone that made a comment.

much love!!!

Edited November 10, 2014 by 95guy

[Guest]

 boon said:

I don't know about that "4th piston often has problems" bit - I think it might be somewhat hearsay.

Put it this way - flat out, 1 of my injectors can dump approximately the same amount of fuel as all 4 on a WRX. And I don't have fuelling issues, with non-split factory rails. If you think about how the fuel pressure setup works (FPR at the end of the rails) you should always have fuel pressure at the injector, unless your pump can't keep up with the flow + pressure demand.

I read into it a long time ago and there was a different science to it. Fecked if i can remember where or why.

[lachlan]

poddie ? are you 16 ?

ignore the fuel rails . they are fkn fine .

best thing you can do is get a real air filter , clean the afm . new filters and oil . reset the ecu .

[95guy]

sorry for these dum qs but why reset the ecu?

and real air filter like a factory one? I heard their better then a pod filter.

[Kiwi_Fozze]

Factory airbox draws in cold air, more of it and less restrictive. Also prevents you killing the maf from vibration. Bov can give weird stumbling idle issues too.

Advantage of fresh oil, filters and an ecu reset is so the ecu is starting fresh, instead of having to totally relearn driving patterns.

Also, you'll quickly find whos advice to take with a pinch of salt. Some people can be a um... a touch blunt about things, but their motivations are in the right place ;-)

Welcome along, hope to see yah at an event or 2 in the near future :-)