Front facing plenum and fuel rail

[ceoont]

Hi guys hoping someone here can clear this up for me. If this question has been explained before then please let me know with a link if possible to the thread. Have tried looking up an answer myself but it's proving difficult.

 

I'm in the process of upgrading my engine(RB25DET NEO), I had originally decided to upgrade the injectors but keep a low mount turbo, meaning all my intake pipes could be left as is. Now however I'm thinking of going top mount and getting a front facing plenum. My question is, will my injectors fit? Denso 570cc GTR injectors. Will they require a new fuel rail with the plenum or can the standard rail be used? Does it depend on the particular plenum? Any info on this whole topic would be brilliant.

Thanks in advance.

PFA

[iruvyouskyrine]

My advice is don't go forward facing plenum. Not really worth the extra hassle.

Will your injectors fit? No way of knowing it depends on what fuel rail and manifold you want to run.

If i was you i would just leave the intake side alone aside from running plazmaman style cooler piping.

[ceoont]

Ok so it's a matter of finding out what fits with what then mate ye?
As I said I was going to leave it alone, but the more I look at setups with the plenum the more I want one [emoji23] None the less thanks for the info [emoji106]

[r33cruiser]

IF you are going to replace the plenum man, I'd recommend getting something like a Plazmaman. Don't go the GReddy.

 

I've done both and its so much easier with the Plazzy, you keep the lower runners and a lot of the stock plumbing.

[KiwiRS4T]

Top mount and a FF plenum won't give you any more power. If you get a bigger turbo and Nistune chip you can fit new injectors into the Neo set up if you get the right ones.

[ceoont]

Not after the power mate I have all the supporting mods I need for the power. 570cc injectors, link G4 ECU, splitfire coilpacks, upgraded fuel pump, AFM. I was gona get a rebuilt hybrid low mount turbo but the more I look at top mount the more I want it [emoji23] Seems that FF plenum will require a non standard fuel rail. Can anyone say this for certain or does it depend on the particular plenum used?

[r33cruiser]

Shouldn't need an A/M fuel rail. I'd only change the rail if it's required for the injectors.

Stock rail was kept for both my old GReddy and Plazzy.