help fitting fuel lab FPR
17 February 2009, 08:20 PM
#1
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help fitting fuel lab FPR
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
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
17 February 2009, 08:41 PM
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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.
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.
17 February 2009, 09:39 PM
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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
wheres the stock regulator? whats it look like lol
17 February 2009, 10:48 PM
#4
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
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
17 February 2009, 10:56 PM
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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
i really cant be arsed taking my inlet off unless i have to, specially now its all together lol
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17 February 2009, 11:30 PM
#9
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)?
, 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)?
- Simtek all the way! lol
18 February 2009, 10:17 PM
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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)?
, 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)?
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)
Last edited by FB Tuning; 18 February 2009 at 10:22 PM.
19 February 2009, 11:57 AM
#13
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?
Last edited by joz8968; 19 February 2009 at 11:58 AM.
19 March 2009, 11:43 PM
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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?
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?
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