iv bought one second hand, no instructions

Its exactly the same as in this pic
http://i343.photobucket.com/albums/o...0/P1010102.jpg

But mine - it has the RHS port occupied by a pipe (inlet?) and the bottom occupied by a pipe (return?) i need to know where these hook up in the classic bay

judging by that pic, inlet should be LHS port from the middle fuel rail thingy, no idea where the RHS one goes! should i have mine like that???? can anyone help, pics would be a big help also

 

You need to just plumb it up the same as in the picture!

Middle pipe from the cluster of 3 on the manifold to one of the side ports on the reg (dont forget to plug the other one)

Bottom pipe on the reg back to the bulkhead return.

You might want to consider setting the rails up in parallel - Then you can make use of both the inlet ports on the reg, and you will get a more even fuel distribution.

 

dont plan on going parallel rails yet, wouldnt particularly benefit from it at at the power im going for either

wheres the stock regulator? whats it look like lol

 

Not so much about power gains as safety.

With the OEM in-series setup, really stupidly no.3 cylinder gets the fuel last, which isn't great as it's right by the turbo! So the parallel rail mod means that each bank gets the same fuelling at the same time and no.3 (and no.4) cylinders get the fuel either '1st' or '2nd' (way better than '4th'!).

APIDavid really recommends doing the parallel rail mod if you have the will/money, etc. (and you know how many Subaru engines he opens up every month!) lol

 

yeah i know, but surly this can be changed using apexi pfc?

i really cant be arsed taking my inlet off unless i have to, specially now its all together lol

 

For sure, the fuelling will be mapped for on the PFC... BUT AKAIK, it doesn't do individual fuelling trims to each cylinder .

You'd need a Simtek for that I think?

 

You can use the PFC for individual cylinder trims

 

On a classic, the stock reg is on the back end of the driver's side fuel rail, just in front of the turbo

 

Cool , I didn't realise that - I have a PFC mapped by JGM.

Fiestaboy, does this mean that mappable ECU's that have this feature (such as the PFC) mean that the parallel fuel rail mod isn't necessary anyway (as the ECU accounts for the fuelling in each cylinder, regardless)?

 

il be going with one or the other, depending on wether i wana go mafless or not

 

Go MAFless for 'fit and forget hooning' - Simtek all the way! lol

 

On the PFC, if you change your injector size then you express the new size as 'stock size/new size*100'

Therefore, you have the ability to make any of the injectors flow more or less fuel, as desired.

Parallel Fuel Rails are still a good mod, as you will ensure a more consistent pressure and even flow across each rail, and therefore a better matched flow rate from each injector (assuming they're all the same size in the first place)

 

Sure. But that's that a global setting across all injectors i.e. the same for each, isn't it?

Surely, it's advisable to up the flow rate on any cylinders that run hotter than others (such as infamous cyl.3) to compensate - thus bringing the cylinder temps all in line, yes?

AFAIK, the PFC doesn't have that ability, does it?

 

back on topic, can anyone identify the tank return for me?

 

ttt

 

still stuck

 

it wants to go on the grey metal fuel pipe on the nearside of the engine bay.its the top one you cant miss it.run it straight to this and then the metal fuel return under the inlet manifold is no longer needed.

hope this helps

 

IIRC its not a global function, you can set it per injector, so yes, you can increase fuel to number 3 relative to the others.

 

Groovy. Danke, Jay.

 

can someone correct this for me - this is my understanding so far?