Rb26 Plenum Options For Twin Fuel Rails

[N1GTR]

I spose it depends on how your tuner tunes.

I get tuned by the same guy as Steveo, running ID 2000's and i'm sitting at 71% DC to make 430 RWKW. Too rich? Possibly? Do we care? Not in the slightest.

Bumping up the pressure might be a way around this, but then you stress the pumps more.

[N1GTR]

Why not just run a Greddy plenum? They have a loyal following with the drag GTR fraternity in Aus/Japan and NZ so you cant go too far wrong with one

I was hoping for something other than Japanese

Looks like adding the bungs to the stock plenum will be perfect, so I'll do that.

[bigmikespec]

Don't care either, not my car.

[NXTIME]

What did you make with the ID2000's, Steve-o?

[N1GTR]

Mid low 4's, dont ask the exact DC - cant remember off hand

[NXTIME]

Only 40-odd rwkw increase with doubling of injector size?? Need an estimate of DC, at least, Steve as they should handle anything any pair of low mounts can throw a them.

[Piggaz]

From memory Steveo, you were low to mid 60's on RS's. Stretching my memory a little now.

[zebra]

Could it be the fuel pumps aren't enough? You guys are still on standard 5/16" fuel lines yeah? I could be not enough fuel getting to the rail so needs a heap of duty to compensate?

[N1GTR]

Only 40-odd rwkw increase with doubling of injector size?? Need an estimate of DC, at least, Steve as they should handle anything any pair of low mounts can throw a them.

700 to 1000......that's not double

I dont like to guess things - thats for idiots to do who dont try things for themselves and just believe whats written on the internet. Im dealing with the fact, so when i'm out there next i'll find the exact number. Not that it matters for this thread mate - i'll post results when it's all finished, nothing until it's all done though.

Edit; This is all for a new engine I've got, and yeah without sounding like a prick, it's pretty clear that what applies to a normal 2.6L RB doesnt apply to this one - and I'm getting pretty keen to drive it. I know you know that feeling as well as I do!

[N1GTR]

Could it be the fuel pumps aren't enough? You guys are still on standard 5/16" fuel lines yeah? I could be not enough fuel getting to the rail so needs a heap of duty to compensate?

2 x 044's feeding through their own lines to twin entry rails. So two lines up and one return. Fuel pressure throughout the dyno sessions are logged and nothing's wrong there. Maybe in the future it "could" be an issue with the different fuels (not using just E85 and pump 98) i'll be trying on it so it's a wait and see kind of thing. That said, if fuel pressure is low, the ECU has provisions for that anyway.

[N1GTR]

Thanks for the help guys, I'll close this now as there's nothing really left to talk about before this gets into a "my tuner says" "his tuner says" kind of thing regarding DC and as mentioned, I don't care about fuel usage

Cheers

-Steve