Rb26 Fuel Advice

[kurruptt1]

Hey guys I have an Apexi power FC, Tomei poncams, greddy produce and Nismo RS580 turbos. What I want to know is how much power am I expected to get with the factory fuel pump, injectors, and air flow meters. I have been searching the forums and struggling to find the info.. you guys know your stuff so any help would be amazing! Thanks everyone

[Ben C34]

Well you would be totally nuts to risk your engine by not replacing your old pump

[kurruptt1]

Hahaha thanks mate, what pump is a good upgrade?

[gtr jet]

Your limit would be about 300kw if you're running on 98, which I take it you are.

I'm not too sure how much power those turbo's make but if you want to stick to around 300kw just grab a walbro 255lph.

If you wan't more power then you'll need to start looking at injectors and other upgrades.

Edit: just realised you have 2530's. You might aswell stick a bigger pump and injectors in and aim for 350-400kw.

[kurruptt1]

Thanks so much mate, what fuel pump and injectors combo would be good for the 350-400kw mark?

[picklesRs4]

Just did a quick google search of 400kw fuel mods for rb26 and found somebody who made it there with bosch044 pump and sard 1000cc injectors. Seemed to be a similar engine set up to yours as well

[kurruptt1]

Thanks mate, I was struggling to find good info. you guys rock

[Piggaz]

1000 cc or 1300 cc ID's, 044 or something similar. Job done.

1300's have been proven to do over 450 awkw on E85.

Simple formula, set and forget.

[scotty nm35]

1400cc Xspurts and a Walbro 460L for e85.

1000cc Xspurts and a Walbro 400L for petrol would be even cheaper, like $750 or so.

Bosch 044 pumps are an old noisy design, more suited to external mounting under race cars.

[Piggaz]

Rubber mount them. They're not that bad.

[gtr jet]

I run ID 1000's and a Walbro 400 for E85 but I'm only making 325rwkw. They'd probably make 400kw on E85 and would do it no worries on 98.

Cheap too. Under $1000 for the lot installed.